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_
06-21-2013, 05:59 AM
Please note we fit 1.35V memory into our G750s. New Haswell CPUs require this and using 1.5V memory can cause problems along the lines of:

> Overheating
> Damage to the CPU IMC (due to the increased potential difference)
> Greater battery use than our stated values.

Also remember for every DIMM you add you increase the power consumption by 1-3W each, depending on what you buy.

Once I get ahold of a G750 to borrow for a few days I'll do an upgrade guide.

Darknal
06-21-2013, 06:10 AM
Much appreciated for the PSA Marshall! Good thing I waited out for installing new memory sticks.

rewben
06-21-2013, 10:24 AM
thanks a lot for this @MarshallR :)

BobbyCannon
06-21-2013, 10:45 AM
Ah crap. I've already installed my ram inside... My Corsair Vengeance ram would not work with all 4 sticks. I guess this would would be why? I'm going to have to order replacements but would it be OK to run the system now? I guess so I ran it all day yesterday like this.

Xbcxbc
06-21-2013, 05:27 PM
Marshall, thank you, a step-by-step guide would be very much appreciated. I'm comfortable putting in hardware (and I wouldn't feel uneasy at all doing it to someone else's laptop) but without documentation on how to take the machine apart I'm somewhat hesitant to start it. Good thing you mentioned the memory, I need to order the proper memory sticks.

BobbyCannon
06-21-2013, 11:18 PM
I've thought about this more and more. I'm really disappointed with Asus for not putting in this detail in the manual. Technically you guys don't even detail anything about what kind of RAM to even use in the manual. Please update the manual to give some sort of direction for the user to find the correct type of RAM to use.

I've purchase 5 of these Asus ROG G series laptops. This model is my least favorite. I'm actually wishing I would have just stuck with my G75. Let's just hope my new RAM I order from Amazon works. It's 1.35v and it's 1600 so it should work...

/FingersCrossed

Xbcxbc
06-21-2013, 11:52 PM
Yes, the lack of technical documentation is very frustrating. It doesn't need to be in the printed manual but at least a detailed PDF should be available for download - it really wouldn't cost Asus anything and it'd go a long way to make this product look professional. I had similar amateurish experiences with previous ROG G laptops - I've used 4 so far. Decent hardware, acceptable prices, soiled by these kind of really primitive mistakes. I'd rather just pay $50 more for the laptop if that covers the cost of putting together a decent tecnical documentation.

When I called VIP support about about how to get to the memory, the support guy kept bleeting "I'm sorry sir, we don't provide this kind of information...". The poor guy really pissed me off although it wasn't his personal fault. What's the point of making a high-end laptop (even targeted for modders) when getting information on how to extend it is near impossible?

BobbyCannon
06-22-2013, 04:29 PM
Well I got my new RAM in and installed. It worked on the operation table when I tested it. I put the bottom lid on and it was done. I did have a weird moment though where when I moved the laptop from my operation table to the actually desk. The laptop would not boot. I flipped it over and popped the bottom lid off and reseated the bottom RAM. Once I did that it booted again. This makes me nervous because I will be traveling with this laptop. I hope this doesn't become a future issue... I'm going to post some disassemble pictures in my other thread.

_
06-24-2013, 04:33 AM
Ah crap. I've already installed my ram inside... My Corsair Vengeance ram would not work with all 4 sticks. I guess this would would be why? I'm going to have to order replacements but would it be OK to run the system now? I guess so I ran it all day yesterday like this.

Yes it will work but under extensive stress (gaming/video encoding etc) you can get overheating depending on the DIMMs used. 1.5+V is generally not advised for long term use either, but a few weeks won't hurt.

On the product pages it does state DDR3L, but I have requested our G series marketing clarify that means 1.35V. In an ideal world memory companies should identify their SO-DIMM products as Haswell compatible as well. I'm asking about whether we have a public QVL or whether it's something we just informally issue to SI partners.

For the record though our notebooks are not targeted at modders sorry, the TA is for those who require a device that works out the box. We feel that if you want more extensive customizations you should look at a small desktop.

BobbyCannon
06-24-2013, 01:23 PM
I cannot thank you enough Marshall for creating this thread. It saved me a lot of time and headache. However just letting you know that I hand contacted support and they suggested my issue was because of the speed of the RAM (1866). Without your post I could have ordered another set of RAM that would not have worked. I would have ordered the same Corsair Vengence RAM but at a speed of 1600. This would have been very frustrating. If there is anything you can do to help educate your support staff I would suggest it. Something like MEMO or something to where they will know to ask about the voltage of the RAM.

Thank you again for making this post and helping me get my RAM issues fixed. I'm now enjoying my G750 with a full 32gb of RAM. Woot!

Xbcxbc
06-24-2013, 03:11 PM
Just checking to make sure I'm looking at the right memory - would this work:

http://www.amazon.com/Crucial-PC3-12800-204-Pin-Modules-CT2C8G3S160BM/dp/B008LTBJFW/ref=sr_1_2?s=pc&ie=UTF8&qid=1372086574&sr=1-2&keywords=ddr3+1600

I'm going back and forth between wanting 32 GB and not wanting to go through the disassembly that BobbyCannon did with the laptop. :)

rewben
06-24-2013, 03:34 PM
just make sure it's 1.35v then you're fine. i plan to get 32gb of crucial ram also. we have few choices when it comes to 1.35v ram.

BobbyCannon
06-24-2013, 05:01 PM
I purchased this RAM and it works great. http://www.amazon.com/gp/product/B008LTBJFW/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1

Xbcxbc
06-24-2013, 08:38 PM
@BobbyCannon - yes, I was looking at the same memory. There doesn't seem to be many to choose from.

AntDX316
06-25-2013, 09:14 AM
This is system specific.
http://www.kingston.com/us/memory/search/Default.aspx?DeviceType=3&Mfr=ASU&Line=G750%20Notebook&Model=84732&DisPart=&Description=Kingston_ValueRam_Memory_for_ASUS/ASmobile_G750_Notebook_G750JW

If you use CPUZ it will tell you the ram is from the same company, Kingston. I got another stick of 4GB because 3 slots are filled and the total of the RAM is 12GB with 1 slot missing.

I had to get another stick because you only get dual channel if you have both slots filled. With one slot filled it's basically single channel even if you have 1 of the 2 dual channels fully filled.

chri5d3an
06-28-2013, 11:51 PM
thanks for the heads up i didn't even think about that.

Dr4g0n36
07-09-2013, 09:50 AM
so the 1866 are recognized or not?

Wxspin02
07-11-2013, 04:59 AM
Really, why deviate from a standard 1.5 volt? I could list plenty of reasons this does not make sense concerning power consumption. Fact is I have taken a G750JW and loaded it up with 24GB DDR3 because this junk of a G765M Graphics card needs to borrow system memory due to the 2048 MB of GDDR 5 simply won't cut it.

I think this PC has to go back and I will pull out the Qosmio with 3GB DDR5, 3D Vision, and G670M Fermi and put this card to shame. The sad thing is I wanted this laptop for the superior build quality to Toshiba's 1 fan burn your leg design non-cooling system. It still will shame this computer with its third gen hardware.

I hate this because I really looked forward to a quality experience on this PC. GTA IV on the highest settings only garners 13.8 fps while taxing slow shared system memory.

Myk SilentShadow
07-11-2013, 05:43 AM
the 1.35V spec comes from Intel, not ASUS. And why, praytell is using 1.35v so bad? curious minds want to know

_
07-11-2013, 08:07 AM
so the 1866 are recognized or not?

It will be recognized but it will only run at 1600MHz, which is the CPU spec.


Really, why deviate from a standard 1.5 volt? I could list plenty of reasons this does not make sense concerning power consumption. Fact is I have taken a G750JW and loaded it up with 24GB DDR3 because this junk of a G765M Graphics card needs to borrow system memory due to the 2048 MB of GDDR 5 simply won't cut it.

1.35V is the standard for 4th Generation Intel core processors.

In 2008 4-series platform commonly used ~1.8V DDR3
In 2009 X58 platform required 1.65V
In 2010/11/12 5/6/70-series platform required 1.5V DDR3
In 2013 8-series platform requires 1.35V

~2GB of GDDR5 mirrors the standard of most desktop PCs. Only the most expensive cards come with more and if you're gaming at FHD 2GB should be enough. I've no idea what you're doing where it requires system memory.

Dr4g0n36
07-11-2013, 09:34 AM
yeah...another bad news...2 months ago, while presenting G750, all sites reported that haswell "will support 1866" -.-

mvadu
07-14-2013, 03:40 AM
This should work on G750-jw right?
http://www.amazon.com/Samsung-Electronics-204-Pin-SO-DIMM-MV-3T4G3/dp/B00591ZYX8/ref=cm_cr_pr_product_top

Dr4g0n36
07-14-2013, 04:09 AM
You need to know if it is 1,35v. Google it.

mvadu
07-14-2013, 02:48 PM
It is.. the amazon product page has a table below, and its marked for 1.35v. My question was for other details of the ram.

Dr4g0n36
07-14-2013, 05:25 PM
because MAX allowed voltage i 1,35 not standard

roryh86
07-15-2013, 09:02 PM
so how come my laptop's ram chips are all 1.28v?

They run at around 1.28v. And that is a damn expensive ram module you bought. I got 2x4GB Crucial (http://www.amazon.com/Crucial-PC3-12800-204-Pin-Notebook-CT2CP51264BF160B/dp/B005LDLVAO/ref=sr_1_2?s=electronics&ie=UTF8&qid=1373922150&sr=1-2&keywords=2x4gb+crucial+1600) modules for $56. You should've gone with a cheap regular one like the Samsung one above, it's all the same :(

Joystick
07-23-2013, 09:39 AM
Thank you MarshallR.
This thing is unknown not only to a large part of "general users", but to professionals too. Xoticpc is offering upgrade to Corsair Vengeance: Corsair Vengeance at 1.35V does NOT exist.

I predict a high mortality rate of Haswell laptops and lots of lawsuits because of the lack of information.

arsremembrance
07-24-2013, 07:39 AM
It will be recognized but it will only run at 1600MHz, which is the CPU spec.



1.35V is the standard for 4th Generation Intel core processors.

In 2008 4-series platform commonly used ~1.8V DDR3
In 2009 X58 platform required 1.65V
In 2010/11/12 5/6/70-series platform required 1.5V DDR3
In 2013 8-series platform requires 1.35V

~2GB of GDDR5 mirrors the standard of most desktop PCs. Only the most expensive cards come with more and if you're gaming at FHD 2GB should be enough. I've no idea what you're doing where it requires system memory.

However, lots of stores in my place (Malaysia, Singapore, and Indonesia) still insist that we can use 1.5V and will not cause any problem at all.
And they already sold it to lots of G750 customers.

Yes 1.35V, or a DDR3L, or a DDR3 Low Voltage is a standard for 4th Gen Intel Core i7.
To be specific, Intel® Core™ i7-4700HQ (3.4GHz) - that being used in G750 series, needs DDR3L 1333 or 1600 (i think its more like recommended specification rather than mandatory).

Memory Specifications (from Intel official website)
Max Memory Size (dependent on memory type): 32 GB
Memory Types: DDR3L-1333,1600
# of Memory Channels: 2
Max Memory Bandwidth: 25.6 GB/s
ECC Memory Supported: No

Azfar J
08-08-2013, 03:53 PM
Hi,

Mine is preinstalled with 8gb... checking cpuz it says they put it in slot 2 & 4...n running in dual mode...
So im planning to buy 2X8gb ddr3l(pc3l) and install it... would there be a problem since both dual channel doesnt have the same memory capacity..??
If i got time of course i would send it to SC n let them take out the 8gb and just use the 16gb...but the SC (melbourne) says its gonna take 3 days!!!
24705

zalbard
08-09-2013, 02:52 PM
It will be recognized but it will only run at 1600MHz, which is the CPU spec.
Why can't it select 1866 if RAM is 1866MHz 1.35v certified?

Like these sticks: http://www.amazon.de/KINGSTON-1866MHz-Non-ECC-SODIMM-Voltage/dp/B00E1XGCCW/

Could an option in BIOS perhaps be added for that? It's an enthusiast laptop after all...

F1xaziz
08-10-2013, 04:15 AM
Hi everybody I was looking for some specific RAM information on Asus ROG G750JX-TB71.
I read in a few places that it comes equipped with 2 8gb memory modules and therefor has 2 slots free. Making it ideal to upgrade it to 32gb.
I was wondering, if the two free slots are the ones that are accessible from underneath the computer close by the hard drive bays (accessing those will not void the warranty).
I was also wondering if anybody knows what are the specs of the 16gb of ram that come installed on the computer (Timing, CAS Latency, and Voltage).
Thank you for the help.

zalbard
08-10-2013, 04:08 PM
I was wondering, if the two free slots are the ones that are accessible from underneath the computer close by the hard drive bays (accessing those will not void the warranty).
That's actually good you mention that. Will replacing two modules that are not near drive bays (I am talking about 2x 4GB sticks installed by default) void the warranty? I hope not!

Apinut
08-13-2013, 09:09 PM
Hi there :)

I'm new here. I just installed Hynix 8 gb x2 (http://www.ebay.de/itm/2x-8GB-16GB-DDR3L-RAM-0x80AD-1600-Mhz-f-Apple-PC3L-12800S-Original-Hynix-SODIMM-/360575124994?pt=DE_Technik_Computerzubeh%C3%B6r_Ar beitsspeicher&hash=item53f3f3c602) and they work fine. Hope this help.

zalbard
08-14-2013, 12:13 AM
Hi there :)

I'm new here. I just installed Hynix 8 gb x2 (http://www.ebay.de/itm/2x-8GB-16GB-DDR3L-RAM-0x80AD-1600-Mhz-f-Apple-PC3L-12800S-Original-Hynix-SODIMM-/360575124994?pt=DE_Technik_Computerzubeh%C3%B6r_Ar beitsspeicher&hash=item53f3f3c602) and they work fine. Hope this help.
Did you keep or remove the original RAM? And if you removed it, was it near the HDDs?

Kalata
08-17-2013, 09:53 PM
I am planning to buy Corsair Vegeance 8gb its saying that is 1.35v Do you think that i will have problem wtih it ?
this is the one http://www.corsair.com/en/vengeance-8gb-high-performance-laptop-memory-upgrade-kit-cmsx8gx3m2b1600c9.html

svansiclen
08-18-2013, 04:52 PM
I can confirm BSOD and mass hysteria using 1.5v corsair vengeance 8GBx4 modules.

Switched to the 1.35v Crucial 8GBx4 modules and haven't had a problem.

Now I need to find a use for this 1.5v 32gb of extra ram I have.

Nahraz
08-28-2013, 12:13 PM
Is this really the divine solution i have been searching for?

Bought a G750jh and upgraded it to 32GB RAM (Corsair) and switched the HDD with a SSD (Samsung 840 Pro 512GB). Since then i've experienced alot of BSOD's (IRQL_LESS_THEN_EQUAL and KMODE_EXCEPTION_UNHANDLED). The Service Appartment i bought the Notebook at were clueless and already switched the RAM a few times. The i stumbled across this thread and it turns out that the RAM i have installed are indeed working on 1,5V.

So you advice to switch to 1,35V? (is it possible that irreversible damage has already been done?)

Edit: I turned off Power4HybridGear and until now no Bluescreen occured.. Is that enough or should i still switch to 1,35V?

Edit: I have now bought 2x http://www.alternate.de/Kingston_HyperX/Kingston_HyperX+SO-DIMM_16_GB_DDR3-1600_Kit,_Arbeitsspeicher/html/product/1040561/? will i be ok running this 32GB on the Asus G750JH? (Site is german but clicking on "mehr Infos" should give you all the Information)

svansiclen
08-29-2013, 09:25 PM
yes.. this will fix your problem if my experience is the same as yours...

Max Power
09-03-2013, 07:12 AM
I found these they should be compatible with the G750 according to the specs anyways
http://www.ncix.com/products/?sku=78741&promoid=1190

Carry2111
09-03-2013, 09:11 PM
Hi,

i bought a g750jh with 32 GB Upgrade, but the Shop put the normal 1.5V Memory to the Notebook. I used the Notebook for 1 day and after a few BlueScreen i send the Notebook back and told them that the G750 needs the 1.35V Memory (found in this Forum) . So the shop changed the Memory now to 1.35V. Yesterday I got the Notebook back. After switching the Notebook on, i got again BlueScreens (IRQL_LESS_THEN_EQUAL and KMODE_EXCEPTION_UNHANDLED). What can i do? Is it a RAM Problem, or something else?

br Juergen

svansiclen
09-03-2013, 09:18 PM
You have verified it is 1.35v ram? use cpu-z and look at the spd tab. Use the dropdown for each slot and verify it is running 1.28v to 1.35v and nothing higher.

amanieux
09-03-2013, 10:02 PM
ok for 1600mhz at 1.35v but will cas9 ram work (instead of cas11) will it works as cas9 or slowed down to cas11 ? if cas9 ram is run at cas9 speed will it make a lot of speed difference (vs cas11)?

thanks

Carry2111
09-04-2013, 07:30 AM
Hi,

Yes CPU-Z say 1,28V for all 4 Slots. Today again 3 BlueScreens in 15 Minutes. IRQL_LESS_THAN_EQAL. Drivers are all up to date.
No other Software Installed. It is a blank Windows 8 with all Updates installed.
br Juergen

Nahraz
09-04-2013, 08:14 AM
Hey Carry2111,

i had the same error messages.
Before i switched out my 1,5V for 1,35V i tried a couple of things.
What seemed to do the trick was deinstalling "Power4HybridGear".
No Bluescreens since then although is still had 1,5V (switched later nevertheless).
Is it running on your Laptop? If so, try deinstalling it.

But still, the fact that you still get Bluescreens (even after switching to 1,35V) bothers me...
Does that mean mean my/our systems are still unstable?

amanieux
09-04-2013, 01:53 PM
hi
about 1866Mhz RAM you say "It will be recognized but it will only run at 1600MHz, which is the CPU spec." but will it automatically set a lower CAS than 11 ?"
thanks

amanieux
09-04-2013, 02:07 PM
Once I get ahold of a G750 to borrow for a few days I'll do an upgrade guide.

is there an upgrade guide showing us how to change ram in the 2 internal slots under the keyboard (not the 2 easily accessible slots located near the hdd), will accessing these 2 first slots void the warranty ?

Carry2111
09-04-2013, 04:45 PM
Hi Nahraz,

thanks for the tip. I will try to uninstall Power4HybridGear. Got also some other BlueScreens as well;
PAGE_FAULT_IN_NOPAGED_AREA, DRIVER_OVERSCAN_STACK_BUFFER and KMODE_EXCEPTION_NOT_HANDLED. I can't use the Notebook
more then 15-20 Minutes before it crash again. This is really unbelievable for a 2500 € !!!!! Euro Notebook.

I also checked the RAM with memtest86. --> No error found. (2 complete Test rounds)

Maybe a clean Windows 8 Install helps. I will try this if uninstalling of Power4HybridGear not helps.

br
Juergen

Carry2111
09-06-2013, 12:17 PM
HI All,

Deinstalling of Power4HybridGear does not helped. BlueScreens occours again. Installed Windows 8 complete new. (not from Recovery Option). Installed all Drivers from Asus Homepage. No more Bluescreens since that. Now the G750JH running fine. Prime95 runs for hours with
no crash or bluescreens.

br
Juergen

bert269
09-06-2013, 01:21 PM
Can someone PLEASE give details on how to open the G750JX to access the inside RAM slots. I cannot find any link/details here about how to do this and there are at least two who asked for it in just this thread. Someone said that is was directly oposte the keyboard so I wonder if one can jsut remove the keayboard to access the inside slots.....help?
Please - sorry if I did miss it.

Thanks

svansiclen
09-06-2013, 02:21 PM
http://rog.asus.com/forum/showthread.php?33687-Replacing-pre-installed-ram&country=&status=

bert269
09-06-2013, 04:50 PM
GREAT....thanks! Appreciated

Kantm
09-07-2013, 05:55 AM
Hi,

I just bought a G750JX T4064H mattescreen, 750GB HDD 5600rpm and it's only 1 8GB ram, I haven't opened the maintenance hatch to see if the 1 8Gb Ram slot used was inside or out, i'm posting this out of curiosity, since i'm not really much of a techie about this.

I want to purchase a new 8Gb ram for dual bandwidth, which one should I buy? Do I really need to ask for support from Asus service? Since I bought this from another country, and the service in my country kinda suck in multiple ways.

And for dual bandwidth, do i need to plug the Ram in the same place as the original one? for example if the original one was inside, do I have to open my laptop and put it in as well, or plug in any available slot under the maintenance hatch is alright?

Does 16GB Ram is a little bit redundant? I'm using this mostly for AI design and some hardcore game is all...

...

Also, this is a lil bit off topic, I'm thinking about getting an SSD for better load performance while keeping the HDD for data storage, I've been reading in the forum about raid, does it mean if I set up Raid 0 between 2x 250G SSD, I would still have the same 250GB storage, but with a buffed speed? Does that work also, and well with HDD?

Thanks, and reallly sorry if my question is stupid and/or i am putting this in a wrong section somehow.

Also, sorry for my bad english.

Cheers.

dukang1011
09-10-2013, 09:41 PM
http://www.crucial.com/store/listparts.aspx?model=G750JW&Cat=RAM

here we can find au RAM by notebook model.
i've got the 8gb version and it works great.

Kev Row
09-15-2013, 09:02 PM
I purchased A G750JH-DB72-CA. It comes with 16GB of Memory and like many, I. thought I would like to max it out to 32gb. I requested from my sales rep whether it came 2x8 or 4x4 The answer was 4x4 (4 sticks 4GB each), which I became aware later was incorrect. I ordered memory from Crucial Part # BLS2K8G3N169ES4 Spec DDR3L PC3-12800 • 9-9-9-24 • Unbuffered • NON-ECC • DDR3-1600 • 1.35V • 1024Meg x 64. I ordered 4x8GB direct from Crucial and had them delivered my mail to avoid the nasty custom charges. I received my notebook before the memory only to find that the installed memory was 2x8GB SK hynix HMT41GS6AFR8A-PB NO Spec DDR3L PC3-12800 11-11-11-35 Unbuffered NON-ECC DDR3-1600 1.35V • 1024Meg x 64. The installed memory is CL-11, whereas my new memory is CL-9, a little faster, so I decided to replace all 4 sticks. I had a chat session with Asus. They advised me that my warranty would be void if I replaced the upper two modules, no mater who I had do the work. Fortunately there is a Asus factory repair depot close by me where they advised me they could change out the memory without voiding the warranty. I had the work done. It was not cheap but it was done well. I confirmed that I am running at the 9 9 9 24 timing but having trouble confirming that I am operating at 1.35 Volts. Do you have a way to confirm the memory operating voltage? I have tried lots of Tweak software but none will tell me the actual running voltage. I really like this notebook and want to make sure it is operating at 1.35 so as not to do damage. I would be grateful for you suggestions.

cosmicmango
09-15-2013, 09:15 PM
I purchased A G750JH-DB72-CA. It comes with 16GB of Memory and like many, I. thought I would like to max it out to 32gb. I requested from my sales rep whether it came 2x8 or 4x4 The answer was 4x4 (4 sticks 4GB each), which I became aware later was incorrect. I ordered memory from Crucial Part # BLS2K8G3N169ES4 Spec DDR3L PC3-12800 • 9-9-9-24 • Unbuffered • NON-ECC • DDR3-1600 • 1.35V • 1024Meg x 64. I ordered 4x8GB direct from Crucial and had them delivered my mail to avoid the nasty custom charges. I received my notebook before the memory only to find that the installed memory was 2x8GB SK hynix HMT41GS6AFR8A-PB NO Spec DDR3L PC3-12800 11-11-11-35 Unbuffered NON-ECC DDR3-1600 1.35V • 1024Meg x 64. The installed memory is CL-11, whereas my new memory is CL-9, a little faster, so I decided to replace all 4 sticks. I had a chat session with Asus. They advised me that my warranty would be void if I replaced the upper two modules, no mater who I had do the work. Fortunately there is a Asus factory repair depot close by me where they advised me they could change out the memory without voiding the warranty. I had the work done. It was not cheap but it was done well. I confirmed that I am running at the 9 9 9 24 timing but having trouble confirming that I am operating at 1.35 Volts. Do you have a way to confirm the memory operating voltage? I have tried lots of Tweak software but none will tell me the actual running voltage. I really like this notebook and want to make sure it is operating at 1.35 so as not to do damage. I would be grateful for you suggestions.

Download and Install HWINFO64 it will show you the voltage, you can get it at the link below:

http://www.hwinfo.com/download.php

rewben
09-16-2013, 04:57 PM
the better way is to use the software like hwinfo64. i'm glad that the rams work for you .

Kev Row
09-16-2013, 05:37 PM
Thanks for the link Cosmicmango, I downloaded the monitor and I can see that there are two profiles enabled but with different module voltages how do you determine which profile is active? The controller voltages are the same in each profile but the extreme profile is 1.5 module volts where as the Enthusiast profile shows 1.35 module volts. The adventure continues. I am grateful for your help.

cosmicmango
09-16-2013, 09:34 PM
Thanks for the link Cosmicmango, I downloaded the monitor and I can see that there are two profiles enabled but with different module voltages how do you determine which profile is active? The controller voltages are the same in each profile but the extreme profile is 1.5 module volts where as the Enthusiast profile shows 1.35 module volts. The adventure continues. I am grateful for your help.

With HWINFO look under System Summary - lower right - Modules - you will see the voltage - you can click on the arrow and check each stick.

26320

Kev Row
09-17-2013, 01:16 AM
This looked to me a list of all the possible clocking profiles that the memory module would support my list shows 1.35 and 1.5 profiles.
What I can't determine is which profile is active?

tommytan1985
09-24-2013, 05:15 PM
However, lots of stores in my place (Malaysia, Singapore, and Indonesia) still insist that we can use 1.5V and will not cause any problem at all.
And they already sold it to lots of G750 customers.

Yes 1.35V, or a DDR3L, or a DDR3 Low Voltage is a standard for 4th Gen Intel Core i7.
To be specific, Intel® Core™ i7-4700HQ (3.4GHz) - that being used in G750 series, needs DDR3L 1333 or 1600 (i think its more like recommended specification rather than mandatory).

Memory Specifications (from Intel official website)
Max Memory Size (dependent on memory type): 32 GB
Memory Types: DDR3L-1333,1600
# of Memory Channels: 2
Max Memory Bandwidth: 25.6 GB/s
ECC Memory Supported: No

My location is Malaysia, after i bought my G750JX I straight away installed two more Apacer 8GB 1.5V Ram, then nightmares comes!!!!!!!!!!
My laptop keep crashed and restarting.
After read this thread I only wonder it must use 1.35V low power RAM. Damn the manual never mention about this and the technical people told me 1.5V should be working fine on this. But actually not!
:mad::mad::mad::mad::mad::mad::mad::mad::mad::mad: :mad::mad::mad:
Any recommendation?

povetkin
09-29-2013, 07:40 AM
G.Skill Ripjaws: http://www.gskill.com/en/product/f3-1866c10d-16grsl
26913

hmscott
09-29-2013, 03:17 PM
G.Skill Ripjaws: http://www.gskill.com/en/product/f3-1866c10d-16grsl
26913

Am I seeing this correctly? This memory is running at 1866mhz on the Haswell G750JX??

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231709

I thought that wasn't possible. I was about to say don't bother, the best we can do is 1600mhz, and was about to suggest these instead:

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231705

But, CPU-Z and AIDA images you posted are both saying your memory bus is at ~940mhz x2 = 1880mhz!!

povetkin
09-29-2013, 05:47 PM
Yes it's true : http://valid.canardpc.com/07hfug

hmscott
09-29-2013, 06:21 PM
Yes it's true : http://valid.canardpc.com/07hfug

Nice surprise!

How was it to remove original memory? Was it under the keyboard area, or the easy access back panel? Do you have a link for the process to replace memory under the keyboard?

povetkin
09-30-2013, 08:04 AM
Hi,
Unfortunately I can't give you any link, but I try to help. Sorry for my horrible English. :)
1. Remove the service window, battery all hdd or ssd, and all memories.
2. Remove the seven rubbers.
Pic1 (http://postimg.org/image/mkugyflzx/)
3. Remove all screws what you can see (17 screws).
4. Pull out the optical drive.
5. Turn it over your laptop.
6. Raise up this piece. (Pic2) And remove the two screws underneath (left and right 1-1)
Pic2 (http://postimg.org/image/y8oiszb4t/)
7. Carefully separate (snap) the two bracket (top part with keyboard and button part), but watch out for the 4 ribbon cables.

hmscott
09-30-2013, 08:54 AM
Hi,
Unfortunately I can't give you any link, but I try to help. Sorry for my horrible English. :)
1. Remove the service window, battery all hdd or ssd, and all memories.
2. Remove the seven rubbers.
Pic1 (http://postimg.org/image/mkugyflzx/)
3. Remove all screws what you can see (17 screws).
4. Pull out the optical drive.
5. Turn it over your laptop.
6. Raise up this piece. (Pic2) And remove the two screws underneath (left and right 1-1)
Pic2 (http://postimg.org/image/y8oiszb4t/)
7. Carefully separate (snap) the two bracket (top part with keyboard and button part), but watch out for the 4 ribbon cables.

Awesome, very helpful povetkin! Thanks for taking the time to put this together. :cool:

If you make a youtube video on HowTo do this, I am sure many will be happy. It doesn't have to be narrated (English) you can use text frames in between shots/video with light music in between.

BTW, to keep your directions post useful the longest, you can upload the pictures in your instructions to this site, when in the Edit window, click on the icon 2nd from the right of the middle grouping (a picture of a picture) and you can upload to the site so the pictures expand into the posting, rather than relying on offsite hosting of the images - which can change over time.

Totemized
10-12-2013, 07:08 AM
If I want to upgrade my Asus G750J 12GB RAM, what would you recommend me buying?
I'd like it to go a little faster (of course) and alot more storage, as it "only" has 750GB.

Mavinas
10-15-2013, 01:11 PM
-solved-

Lucius Snow
10-20-2013, 05:36 PM
Hi all

I've bought 8 (2x4) GB of extra RAM for my G750JX and it crashes the PC (blue screen) when i use a lot of ressources (video rendering).

This is the model :
MT16KTF51264HZ-1G6M1

https://www.micron.com/parts/modules/ddr3-sdram/mt16ktf51264hz-1g6
http://www.amazon.com/Micron-PC3-12800-1600MHz-unbuffered-MT16KTF51264HZ-1G6M1/dp/B00A8ISYWK

This is 1,35V so i don't understand what the problem is.

Any help appreciated.

Thanks.

Chino
10-20-2013, 05:43 PM
Download and open CPU-Z. Take a screenshot of the Memory tab. Will also need two screenshot of the SPD tab: One of the original RAM that came with your G750JX and another of the RAM you bought.

Lucius Snow
10-20-2013, 06:10 PM
Download and open CPU-Z. Take a screenshot of the Memory tab. Will also need two screenshot of the SPD tab: One of the original RAM that came with your G750JX and another of the RAM you bought.
Here are the screenshots. Thank you.

28285282862828728288

Chino
10-20-2013, 06:14 PM
That's perfect. Now have you ran Memtest86+ to test your RAM? If not, please download it and run 1 or 2 cycles. There is a guide linked in my signature if you need help running the utility. Report back youe results. ;)

Lucius Snow
10-20-2013, 06:21 PM
I will and post the results tonight. Do you think this RAM should be 100% compatible ?

Lucius Snow
10-20-2013, 07:56 PM
No error on Memtest86+ after one full cycle. This is very strange. I'm sure the RAM causes the blue screens because i tried 5 times my video rendering, and it crashed each time. Once i removed the extra RAM, there was no trouble anymore with the exact same operation...

Thank you.

hmscott
10-21-2013, 01:07 AM
No error on Memtest86+ after one full cycle. This is very strange. I'm sure the RAM causes the blue screens because i tried 5 times my video rendering, and it crashed each time. Once i removed the extra RAM, there was no trouble anymore with the exact same operation...you.

Does your video rendering use CUDA acceleration? It might be your graphics card / graphics card memory. Did you OC it at all? Or is it at stock settings?

Use something like Asus GPU Tweak tool to look at the GPU utilization while starting your render, if you don't know if it uses CUDA the GPU usage increase will suggest it is using the GPU for rendering. You could also use GPU-Z.

Asus GPU Tweak - new version 2.4.7 - I have been using 2.4.6
http://support.asus.com/download.aspx?SLanguage=en&m=gpu%20tweak&os=30

TechPowerUp GPU-z - use the Sensors tab - click "continue refreshing while GPU-z is in the background"
There is an ROG skinned version available
http://www.techpowerup.com/downloads/SysInfo/GPU-Z/

FYI, the Techpowerup GPU is available in Asus GPU Tweak Tool too, click on the GPU Info icon on the main tab. Asus GPU Tweak tool has it's own much nicer/larger scrolling graph log for GPU readings.

Lucius Snow
10-21-2013, 08:39 AM
There's no O/C at all, and i did two video rendering with and without GPU / CUDA acceleration enable.

A new test this morning with the same video rendering and the 16 GB inside didn't crash. Strange.

kingsknight
10-21-2013, 10:34 AM
Hi I'm new to this forum and just bought a G750JW from ebuyer.com along with 2x intel 520 160gb SSDs and an extra 8gb of ram which is 1.5v. I'v had the laptop for over a week and slightly overclocked the CPU and overclocked the GPU to get around an extra 10/15% out of it. I haven't had a single problem with it. My CPU/GPU runs very cool.

Since reading this I have ran some memory tests and haven't had a single error. Over all I'm extremely happy with it but just a little worried since reading about the ram.

hmscott
10-22-2013, 05:29 AM
There's no O/C at all, and i did two video rendering with and without GPU / CUDA acceleration enable.
A new test this morning with the same video rendering and the 16 GB inside didn't crash. Strange.

You reseated the memory as part of your debugging?

Lucius Snow
10-22-2013, 08:39 AM
You reseated the memory as part of your debugging?
Yes i did.

hmscott
10-22-2013, 03:18 PM
Yes i did.

Re-seating the memory likely fixed the physical contact problem between the SO-DIMM and the socket. It might have been fine when it left the QA bench, but by the time the G750 reached you the memory had dislodged enough during shipping so as to be intermittent.

eojlin
11-05-2013, 06:13 AM
Hi,

The only SODIMM closest to 1.35V available in my region is the following:
"Crucial Apple 16gb (8gbx2) ddr3 1600 CT2K8G3S160BM Mac 2012 series"
http://www.tipidpc.com/viewitem.php?iid=27187156
(I don't even know if the memory is legit - because other web images of the SODIMMs do not look similar.)
or... http://www.newegg.com/Product/Product.aspx?Item=N82E16820148609

It says, "1.35V/1.5V"... does this mean dual voltage? How do I set my G750JW to only run at 1.35V?
It also says that it's for Mac (Apple) 2012 series.

I'm a software programmer and planning to run a few Virtual Machines on my machine - aside from gaming, of course.

Will these SODIMMs do?

ZiggZagg
11-05-2013, 03:04 PM
Hello eojlin, I'm not certain the Apple memory will work and if so work well in a pc however, I've never researched this to any great degree since I have never owned an Apple machine. I can however direct you to Amazon where I purchased an 8gig stick of "Crucial" ram. It cost approx. $76.00 +shipping. I'm pretty sure (unless you live at the North pole :p) that Amazon can ship to your address without difficulty.

ZZ

eojlin
11-06-2013, 05:53 AM
Hello eojlin, I'm not certain the Apple memory will work and if so work well in a pc however, I've never researched this to any great degree since I have never owned an Apple machine. I can however direct you to Amazon where I purchased the 8gig stick of "Crucial" ram mentioned in my post. It cost approx. $76.00 +shipping. I'm pretty sure (unless you live at the North pole :p) that Amazon can ship to your address without difficulty.

ZZ
Thank you.
But, sadly, North Pole has better chances of delivery-support from Amazon (including Amazon's Sellers) than in my region (just exaggerating - hehe). I live in the far east (not included in Amazon's list of supported countries http://www.amazon.com/gp/help/customer/display.html?nodeId=201118550); and, I rarely visit the US. I can acquire a forwarder's service to setup a North American address and have them forward my order here, but, it's too troublesome in my case (and somewhat costly).

ZiggZagg
11-06-2013, 01:57 PM
I'm sorry to hear that. I guess I've been taking my location for granted... I apologize. You might again consider then what you first mentioned.... Mac memory but I would research that completely before spending money. Someone on this forum should know if Mac ram sticks will work in pc laptops. Put forth a query on the subject but I'd start a new thread in this section (g750 laptops) if that is your model or in what ever section pertains to your ROG equipment.
ZZ

ajiskeng
11-16-2013, 04:19 AM
can you recommend what model/brand of ram should i get?

ZiggZagg
11-23-2013, 06:03 PM
Most any brand will meet the required specs however, how well they're met is the question. Usually (as with anything) you get what you pay for. Faster memory is of course more expensive, what's referred to as "matched memory" can be more expensive but performs better. Samsung, Kingston and "Ballistic" are all good but plain "made in China" memory will serve on a budget. ZZ

Lucius Snow
11-24-2013, 10:45 AM
Re-seating the memory likely fixed the physical contact problem between the SO-DIMM and the socket. It might have been fine when it left the QA bench, but by the time the G750 reached you the memory had dislodged enough during shipping so as to be intermittent.
I'm back with the same problem. Many blue screens. I wonder if the new RAM is not faulty because i've discovered this is written "1,5V" where the slots are. This is not very visible. The original RAM inside is 16KTF51264HZ.

This website says it uses 1,35V :
http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=0D736CD9A5CA7304

And this one, 1,35V or 1,5V :
http://www.memorybenchmark.net/ram.php?ram=Micron+Technology+16KTF51264HZ-1G6M1+4GB&id=74

The physical bad contact with the socket might be the reason, but i'm still not completely sure.

BrentClark910
11-28-2013, 05:51 AM
I have just ordered a G750JH and I am upgrading to 32gb of this RAM http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=E7EC3E76A5CA7304 I will be selling the 24gb of the OEM Ram which came with the system. If anyone is interested just leave me a post here and I will contact you. The 24gb is 8gb x 3 sticks. So if you are looking to upgrade your RAM this OEM will be perfect for you.

hmscott
11-29-2013, 10:13 PM
I have just ordered a G750JH and I am upgrading to 32gb of this RAM http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=E7EC3E76A5CA7304 I will be selling the 24gb of the OEM Ram which came with the system. If anyone is interested just leave me a post here and I will contact you. The 24gb is 8gb x 3 sticks. So if you are looking to upgrade your RAM this OEM will be perfect for you.

Hey Brent, PM'd you. It would help if you could parcel these out to 3 of us, 1 each to another JH owner would round out our JH's to 4 SO-DIMMS :)

jbreeze228
12-06-2013, 08:20 PM
I'm looking to add memory to my G750-JW (Best Buy version). Currently I have the factory 8G installed. I understand these laptops require 1.35V RAM. My question is this, if I leave the factory RAM installed which are in banks 2 and 4, is it ok to use a different brand but with the same timing and also it's dual channel like the factory RAM without any BSOD or problems?

This is the RAM I want to order
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231726

Just ordered, so I guess I'll find out when I receive it. From everything I've researched it should work with no prob.

thebiocity
12-08-2013, 08:37 AM
Wow well i just noticed this thread after 3 weeks of installing 1.5 v ram and i contacted the seller they told me they'd replace the ram if i got a report from asus that the 1.5 v ram was causing problems. would it actually cause problems?

hmscott
12-09-2013, 05:45 AM
Wow well i just noticed this thread after 3 weeks of installing 1.5 v ram and i contacted the seller they told me they'd replace the ram if i got a report from asus that the 1.5 v ram was causing problems. would it actually cause problems?

You can send this link to the vendor, it is the first post in this thread and is an official Asus spokesperson.
http://rog.asus.com/forum/showthread.php?33744-Upgraders-1.35V-memory-is-required!&p=272284&viewfull=1#post272284

You can also give them this link, where it specifies DDR3L - lower power DDR3 memory, and that spec says 1.28-1.35v memory required.
http://www.asus.com/Notebooks_Ultrabooks/ASUS_ROG_G750JW/#specifications
http://www.jedec.org/news/pressreleases/jedec-publishes-widely-anticipated-ddr3l-low-voltage-memory-standard

You didn't say what version of G750 you have, but the same DDR3L is in the spec for the JW/JX/JH.

Yes, 1.5v memory will cause problems, as it is drawing too much power, generating too much heat in the CPU and over time will do damage. Reading here will show several people solving their stability problems by replacing the 1.5v memory with the correct spec DDR3L memory.

thebiocity
12-09-2013, 10:04 AM
You can send this link to the vendor, it is the first post in this thread and is an official Asus spokesperson.
http://rog.asus.com/forum/showthread.php?33744-Upgraders-1.35V-memory-is-required!&p=272284&viewfull=1#post272284

You can also give them this link, where it specifies DDR3L - lower power DDR3 memory, and that spec says 1.28-1.35v memory required.
http://www.asus.com/Notebooks_Ultrabooks/ASUS_ROG_G750JW/#specifications
http://www.jedec.org/news/pressreleases/jedec-publishes-widely-anticipated-ddr3l-low-voltage-memory-standard



You didn't say what version of G750 you have, but the same DDR3L is in the spec for the JW/JX/JH.

Yes, 1.5v memory will cause problems, as it is drawing too much power, generating too much heat in the CPU and over time will do damage. Reading here will show several people solving their stability problems by replacing the 1.5v memory with the correct spec DDR3L memory.



they wont exchange the ram they want a diagnostics report or a certificate from asus before they replace the ram.
and i have JX

hmscott
12-09-2013, 10:24 AM
they wont exchange the ram they want a diagnostics report or a certificate from asus before they replace the ram.
and i have JX

They sound like jerks. What is the name of the vendor? , so we can all avoid them. If they don't know what they are doing, or care what they are selling, they are not a good place to shop for the right memory solution.

Contact the vendor and let them know that they have sold you the wrong RAM for your laptop. Asus calls out DDR3L ram for your laptop, and the vendor sold you DDR3 ram, and if the Vendor keeps doing that they will end up being responsible for damaging more laptops than just your laptop. Tell them Asus publishes the requirement in the laptop specification, they don't need a "certificate" from Asus, just use a browser and look at the specification!

I would call your credit card company and tell them the vendor sold you an incorrect / unusable product, and you want to return it, can they help? They can call the vendor and work out the return. You can get your $ back from the credit card company, and they will work it out with the vendor.

thebiocity
12-09-2013, 12:21 PM
its a shop in singapore named Newstead technologies, i have never encountered trouble with computer services until now. this is the first and last time i'd be buying from them. you'd think a place that sells high end laptops would know what parts to use.


*edit
does crucial ship internationally? i'd rather just buy a new set of ram modules than deal with a difficult vendor.

eojlin
12-10-2013, 03:57 AM
I'm looking to add memory to my G750-JW (Best Buy version). Currently I have the factory 8G installed. I understand these laptops require 1.35V RAM. My question is this, if I leave the factory RAM installed which are in banks 2 and 4, is it ok to use a different brand but with the same timing and also it's dual channel like the factory RAM without any BSOD or problems?

This is the RAM I want to order
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231726

Just ordered, so I guess I'll find out when I receive it. From everything I've researched it should work with no prob.

Mine works great on a similar laptop model G750JW (also a Best Buy version - w/ 8GB RAM). I recently upgraded my laptop's RAM from 8GB to 16GB - still runs on dual channel. DDR3L (1.35V) by Kingston: http://www.kingston.com/datasheets/KHX16LS9P1K2_8.pdf

I use the extra RAM for my Virtual Machines.
I guess it doesn't matter what brand you use as long as the specs are the same.

jbreeze228
12-10-2013, 01:20 PM
Mine works great on a similar laptop model G750JW (also a Best Buy version - w/ 8GB RAM). I recently upgraded my laptop's RAM from 8GB to 16GB - still runs on dual channel. DDR3L (1.35V) by Kingston: http://www.kingston.com/datasheets/KHX16LS9P1K2_8.pdf

I use the extra RAM for my Virtual Machines.
I guess it doesn't matter what brand you use as long as the specs are the same.

Awesome. Did you notice any speed difference? Fps improvement? I use Virtual Machines also for my network and Linux classes and need the extra RAM to do stuff on the Virtual Machine and the Desktop at the same time. And I sometimes get the "not enough memory" issue when running multiple applications and playing BF4 lol

eojlin
12-11-2013, 05:41 AM
Awesome. Did you notice any speed difference? Fps improvement? I use Virtual Machines also for my network and Linux classes and need the extra RAM to do stuff on the Virtual Machine and the Desktop at the same time. And I sometimes get the "not enough memory" issue when running multiple applications and playing BF4 lol
Not so much on speed; I can open more VMs concurrently though. And, the Memory (RAM) sub-score of my laptop's Windows Experience Index improved from 7.9 to 8.1

jbreeze228
12-11-2013, 03:07 PM
Are you still using Windows 8? I'm on 8.1 and I think they did away with the Windows Experience Index, I don't see it anywhere.

hmscott
12-11-2013, 07:03 PM
Are you still using Windows 8? I'm on 8.1 and I think they did away with the Windows Experience Index, I don't see it anywhere.

IDK why Microsoft removed it, perhaps the numbers didn't make sense any longer. I got higher numbers on 8.1 on the same laptop - no hardware changes. I made a post about it soon after the 8.1 release... no time to find it now, but here is a link on how to run it manually and get the results from the log files:

http://www.intowindows.com/get-windows-experience-index-wei-score-in-windows-8-1/

jbreeze228
12-11-2013, 08:12 PM
IDK why Microsoft removed it, perhaps the numbers didn't make sense any longer. I got higher numbers on 8.1 on the same laptop - no hardware changes. I made a post about it soon after the 8.1 release... no time to find it now, but here is a link on how to run it manually and get the results from the log files:

http://www.intowindows.com/get-windows-experience-index-wei-score-in-windows-8-1/

Thank you sir! Here is my score, going to try to attach a pic on here for the first time lol
30984

jbreeze228
12-11-2013, 08:17 PM
Not so much on speed; I can open more VMs concurrently though. And, the Memory (RAM) sub-score of my laptop's Windows Experience Index improved from 7.9 to 8.1

My factory 8g of RAM got a 8.2 score. Wonder what the additional 8g will give it. My RAM should be in by Friday.. Darn USPS takes forever to update their tracking info

eojlin
12-12-2013, 09:35 AM
My factory 8g of RAM got a 8.2 score. Wonder what the additional 8g will give it. My RAM should be in by Friday.. Darn USPS takes forever to update their tracking info
Goodluck.
Btw, I was still on Windows 8 when I got the 7.9 and 8.1 RAM sub-scores.

AAndrei
12-12-2013, 09:59 PM
Does Asus G750 series support XMP profiles?

slammurai
12-13-2013, 03:04 AM
I purchased a G750JW Bestbuy version with 8gigs and decided to upgrade to 24 using 2-8GB DDR3 PC3 -12800 SODIMM 1.35v from Crucial. After installing my bios and windows is reading 16 gig instead of 24. I have tried removing and reseating but it seems that the system is only reading the new ram and not the preinstalled. Any ideas?

Guest
12-14-2013, 03:52 PM
Which windows do you install? only 16gb showed in UEFI?

Yesterday, i upgrade my G750JH to 32GB RAM (4x8GB).
Product: Crucial Ballistix SO-DIMM Kit 16GB, DDR3L-1600, CL9-9-9-24 (BLS2C8G3N169ES4CEU)

Works very well. :) Virtual machines and RAM disks are coming! :)

hmscott
12-14-2013, 09:55 PM
I purchased a G750JW Bestbuy version with 8gigs and decided to upgrade to 24 using 2-8GB DDR3 PC3 -12800 SODIMM 1.35v from Crucial. After installing my bios and windows is reading 16 gig instead of 24. I have tried removing and reseating but it seems that the system is only reading the new ram and not the preinstalled. Any ideas?

If it was a motherboard where you could reach all the memory sockets easily, I would suggest putting the new 8GB SODIMMs in the first 2 dual channel sockets, larger memory before smaller memory, but since the laptop requires major disassembly to get at 2 of the sockets, I would suggest trying to match the size/speed/latency of the original 4GB SODIMMs and get a pair of those.

You need closely matched memory when adding memory, or completely replace the existing SODIMM's with 4 of the same SODIMMs. Otherwise you get unpredictable behavior - at least this time the memory doesn't show up at all - usually you get weird application behavior, or at best - memory errors.

slammurai
12-14-2013, 10:58 PM
I called Asus tech support about this and they asked for the tag # after my model # and apparently my particular model only accepts up to 16 gigs of ram. There are models that go up to 16 , 24, and 32. So I returned the ram and went with a 8 gig upgrade kit. So before upgrading I would call tech support to make sure your model will upgrade to what you want. But this is kind of a bummer since these are supposed to be such a great piece of hardware and also 64 bit systems.

hmscott
12-14-2013, 11:17 PM
I called Asus tech support about this and they asked for the tag # after my model # and apparently my particular model only accepts up to 16 gigs of ram. There are models that go up to 16 , 24, and 32. So I returned the ram and went with a 8 gig upgrade kit. So before upgrading I would call tech support to make sure your model will upgrade to what you want. But this is kind of a bummer since these are supposed to be such a great piece of hardware and also 64 bit systems.

If you have 4 sockets, you can support 4 x 8GB = 32GB , or 4 x 4GB = 16gb, or a combination of the 2 in the right order / compatible speeds / latency.

The reason it worked for you isn't because your model is missing data lines to the socket, it is because your 2 x 4GB memory closely matched the ones already installed and therefore were compatible and worked.

If you could have moved the 2 x 8GB to the other 2 sockets that came with the 4GB SODIMMs they would have worked - or if you would have been able to remove the other 2 x 4GB memory, and left the 2 x 8GB in the same sockets you tried, they would have worked.

It is the incompatible ordering / combination of the 4GB / 8GB memory that caused the problem.

Sometimes the Asus phone support gets it wrong. You can ask to escalate to a manager or a engineer, and they will call you back. It has happened to me as well, they say something I know is wrong, so I ask to switch to a more technical support person. Say it nice and don't get them or yourself upset and it will go well.

You can also post a Technical Inquiry via website and that I found also occasionally needs to get escalated. Always include that you have tried the obvious solutions - list them. Register your laptop, and then use the Technical Inquiry menu item - registering the product pre fills in all the details for the Inquiry.

https://account.asus.com/info.aspx

It isn't logical for Asus to retool a motherboard for Bestbuy to use fewer copper lanes to the sockets, and then make separate production runs of the different motherboard, and then have to stock different replacement parts - there is no cost advantage to do that.

All the G750's have the same basic's like CPU, Memory, etc. They come with different sizes and quantity of memory SODIMMs, but the same sockets and capabilities are there.

As it turns out, both answers gave you the only easily workable option, put in 2 more of the same type of 4GB SODIMM's in the open sockets :)

uekiyasan
12-21-2013, 12:04 AM
If you have 4 sockets, you can support 4 x 8GB = 32GB , or 4 x 4GB = 16gb, or a combination of the 2 in the right order / compatible speeds / latency.

The reason it worked for you isn't because your model is missing data lines to the socket, it is because your 2 x 4GB memory closely matched the ones already installed and therefore were compatible and worked.

If you could have moved the 2 x 8GB to the other 2 sockets that came with the 4GB SODIMMs they would have worked - or if you would have been able to remove the other 2 x 4GB memory, and left the 2 x 8GB in the same sockets you tried, they would have worked.

It is the incompatible ordering / combination of the 4GB / 8GB memory that caused the problem.

Sometimes the Asus phone support gets it wrong. You can ask to escalate to a manager or a engineer, and they will call you back. It has happened to me as well, they say something I know is wrong, so I ask to switch to a more technical support person. Say it nice and don't get them or yourself upset and it will go well.

You can also post a Technical Inquiry via website and that I found also occasionally needs to get escalated. Always include that you have tried the obvious solutions - list them. Register your laptop, and then use the Technical Inquiry menu item - registering the product pre fills in all the details for the Inquiry.

https://account.asus.com/info.aspx

It isn't logical for Asus to retool a motherboard for Bestbuy to use fewer copper lanes to the sockets, and then make separate production runs of the different motherboard, and then have to stock different replacement parts - there is no cost advantage to do that.

All the G750's have the same basic's like CPU, Memory, etc. They come with different sizes and quantity of memory SODIMMs, but the same sockets and capabilities are there.

As it turns out, both answers gave you the only easily workable option, put in 2 more of the same type of 4GB SODIMM's in the open sockets :)

Heya,

I also have the G750JW Best Buy version and will maybe be ordering this memory soon: http://www.crucial.com/uk/store/mpartspecs.aspx?mtbpoid=894D862DA5CA7304

I don't mind taking it apart to replace the original 2x4GB as I will want to upgrade to 32GB at some point. Would I be able to add the original 2x4GB to the accessible sockets in the meantime to make 24GB total? Would that be the best/only way to do it or is it possible just adding them to the outside slots would work? I guess 2x4GB+2x8GB is possible as xoticpc offer it as one of their config possibilites. http://www.xoticpc.com/asus-g750jwdb71-p-5788.html?wconfigure=yes

This is what the Crucial "system scanner" offered BTW , also suggesting 32GB will be fine:
Memory Type: DDR3 PC3-12800, DDR3 PC3-14900, DDR3 (non-ECC)
Maximum Memory: 32GB
Currently Installed Memory: 8GB
Total Memory Slots: 4
Available Memory Slots: 2

Cheers :)

hmscott
12-25-2013, 04:14 AM
Heya,

I also have the G750JW Best Buy version and will maybe be ordering this memory soon: http://www.crucial.com/uk/store/mpartspecs.aspx?mtbpoid=894D862DA5CA7304

I don't mind taking it apart to replace the original 2x4GB as I will want to upgrade to 32GB at some point. Would I be able to add the original 2x4GB to the accessible sockets in the meantime to make 24GB total? Would that be the best/only way to do it or is it possible just adding them to the outside slots would work? I guess 2x4GB+2x8GB is possible as xoticpc offer it as one of their config possibilites. http://www.xoticpc.com/asus-g750jwdb71-p-5788.html?wconfigure=yes

This is what the Crucial "system scanner" offered BTW , also suggesting 32GB will be fine:
Memory Type: DDR3 PC3-12800, DDR3 PC3-14900, DDR3 (non-ECC)
Maximum Memory: 32GB
Currently Installed Memory: 8GB
Total Memory Slots: 4
Available Memory Slots: 2

Cheers :)

Hey uekiyasan! Sounds like a good idea :)

Let us know when you swap in the 2 x 8GB's!!

I would test booting/running on the 2 x 8GB's first for a while before trying to add the 2 x 4GB's - just to rule out flaky 8GB's sodimm's - it happens. :)

Brenderick
12-26-2013, 06:32 PM
While I get your position, I also understand how Asus must see this- this is an intel thing, not an asus thing. ALL 4th generation haswell CPUs run on 1.35v RAM, its not like any vendor has a choice about this. I think the expectation of Asus is that if you are going to pop the hood on your laptop to start with, then you are likely qualified enough to already know haswell's specs, as a CPU. Dont get me wrong here, but I knew about the new voltage requirements on RAM for haswell CPUs before you could even buy a haswell CPU, even from an OEM.

Angellus
12-28-2013, 08:25 PM
yes, the lack of technical documentation is very frustrating. It doesn't need to be in the printed manual but at least a detailed pdf should be available for download - it really wouldn't cost asus anything and it'd go a long way to make this product look professional. I had similar amateurish experiences with previous rog g laptops - i've used 4 so far. Decent hardware, acceptable prices, soiled by these kind of really primitive mistakes. I'd rather just pay $50 more for the laptop if that covers the cost of putting together a decent tecnical documentation.

When i called vip support about about how to get to the memory, the support guy kept bleeting "i'm sorry sir, we don't provide this kind of information...". The poor guy really pissed me off although it wasn't his personal fault. What's the point of making a high-end laptop (even targeted for modders) when getting information on how to extend it is near impossible?

i agree!!!

uekiyasan
12-29-2013, 03:49 PM
Hey uekiyasan! Sounds like a good idea :)

Let us know when you swap in the 2 x 8GB's!!

I would test booting/running on the 2 x 8GB's first for a while before trying to add the 2 x 4GB's - just to rule out flaky 8GB's sodimm's - it happens. :)

I've just tried putting them into the easily accessible slots (simplest if it works), everything seems fine so far, Windows showing 24GB of Ram and no crashes or anything for the first half day or so.

CPU-Z screenshots attached, says dual channel so presume all is ok :) 31696

hmscott
12-30-2013, 06:04 AM
I've just tried putting them into the easily accessible slots (simplest if it works), everything seems fine so far, Windows showing 24GB of Ram and no crashes or anything for the first half day or so.

CPU-Z screenshots attached, says dual channel so presume all is ok :) 31696

Excellent! You found compatible 2x8GB RAM to the already installed 2x4GB, good job :)

The flexible Intel memory architecture is great, you have found the key: match speed and latency.

Kinda expensive at $172 for 2x8GB, but if you don't want to open the keyboard side, it is a small premium to pay.
http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=894D862DA5CA7304

thebiocity
01-06-2014, 09:46 AM
so i decided to finally buy another ram a kingston one hopefully its compatible :D question how do i get to the first and second ram slot the one under the keyboard and would it void my warranty?

failsafe
01-08-2014, 02:31 AM
I can count myself to the unlucky ones, who got an G750JW with 16GB and experienced BSODs. Before I found out that I had 2x4GB RAM for 1.5V, I used my ASUS, which was running for ~72h and experienced ~20 BSODs. I ran heavy benchmarks and memtest86+ for 10 hours. After I removed now the wrong RAM the BSODs disappeared.
Now I fear that it had a great negative impact on the lifetime of critical parts like CPU IMC. What do you think - Should I insist to replace the laptop or is it enough if I replace only the wrong RAM?

Kantm
01-08-2014, 04:52 PM
Well, a couple of BSOD wont affect much imo, but if you can't get a good dream with it then why wonder?

Shawnnepc
01-08-2014, 05:02 PM
I can count myself to the unlucky ones, who got an G750JW with 16GB and experienced BSODs. Before I found out that I had 2x4GB RAM for 1.5V, I used my ASUS, which was running for ~72h and experienced ~20 BSODs. I ran heavy benchmarks and memtest86+ for 10 hours. After I removed now the wrong RAM the BSODs disappeared.
Now I fear that it had a great negative impact on the lifetime of critical parts like CPU IMC. What do you think - Should I insist to replace the laptop or is it enough if I replace only the wrong RAM?

Could possibly cause some windows corruption.

It's very unlikely it caused any physical damage to any other components

failsafe
01-08-2014, 06:06 PM
Thanks for your reply.
Actually I wonder if it's really possible to cause any damage with 1.5V. G750 uses HM87 as chipset and Intel says that it is compatible to normal DDR3 up to 1600MHz:
http://www.intel.com/content/www/us/en/chipsets/performance-chipsets/hm87-chipset-diagram.html
Is there really a risk to damage CPU IMC as stated in the first post?

hmscott
01-09-2014, 10:40 AM
Thanks for your reply.
Actually I wonder if it's really possible to cause any damage with 1.5V. G750 uses HM87 as chipset and Intel says that it is compatible to normal DDR3 up to 1600MHz:
http://www.intel.com/content/www/us/en/chipsets/performance-chipsets/hm87-chipset-diagram.html
Is there really a risk to damage CPU IMC as stated in the first post?

You would need to read the engineering notes to be sure, but because Intel made an effort to show 2 different paths into the CPU for the 2 different kinds of memory, I would bet that you aren't supposed to plug in the DDR3 memory into the DDR3L sockets, and the other way around. Intel likely has different requirements to support one or the other, but not both, in the same path/sockets/connections.

32137

hmscott
01-23-2014, 07:16 AM
The Hynix 8GB SODIMM HMT41GS6AFR8A-PB I ordered to add to the 3 that came with the JH arrived today, and it is the same part number that Asus used for the 3 that came with the JH:

Original SO-DIMM (slot 2, under back panel)
32613

New SO-DIMM (slot 1, under back panel)
32612

Works fine, and shows up like the rest:

32611

Not bad for ~$110 shipped :)

http://www.ebay.com/itm/New-Apple-Hynix-8GB-RAM-SODIMM-Laptop-Memory-HMT41GS6AFR8A-PB-DDR3-1600MHz-/390742229259?_trksid=p2054897.l4275

Mentz
01-24-2014, 03:02 PM
Great hint to change RAM...
Where are all 4 socket to change ram ?
I've only found 2 near the HD (G750JX CV200H).
Maybe they are hidden to my sight...

failsafe
01-27-2014, 04:32 PM
Hi,
I replaced now my DDR3 by DDR3L RAM, 4x4GB. But I still experienced BSODs. Far less then with DDR3 but still 3 times in the last 4 days.
How can I verify if the RAM is the problem or if my hardware got damaged? Last time I used memtest86+ when I had DDR3 RAM, but it didn't find any problems. Will a new Windows 7 installation make a difference?

rdiscipio1
02-25-2014, 02:10 AM
Hi,
I replaced now my DDR3 by DDR3L RAM, 4x4GB. But I still experienced BSODs. Far less then with DDR3 but still 3 times in the last 4 days.
How can I verify if the RAM is the problem or if my hardware got damaged? Last time I used memtest86+ when I had DDR3 RAM, but it didn't find any problems. Will a new Windows 7 installation make a difference?

If you are now running all matching pairs, and they pass the mem test, I would think about a quick reformat to rule that out as well.

harriaal
02-25-2014, 01:50 PM
According to Asus Support G750JW does not work with Kingston ValueRAM 4GB DDR3L 1600MHz, SO DIMM, CL11, 1.35V. According to them its not compatible with the original memory modules....

numanRC
02-27-2014, 07:43 PM
just discovered:
there is "1,5" mark on the RAM slot itself in my g750jh. But stock DIMMs are Hynix HMT451S6AFR8A - 1.283V to 1.45V... probably just "borrowed parts" from other model. Just think what "dumb user" must do if it says so.
edit one more thing- Corsair´s "memory finder" suggest 1,5v memory for g750. I´v send them a letter couple a days ago, still ...

failsafe
03-02-2014, 03:33 PM
Harriaal is my hero. I have Kingston ValueRAM in my notebook and experienced BSODs (but only after long usage) - I couldn't narrow down the problem and also the shop who sold me it, didn't know that it is not compatible with the notebook. I need an official source from ASUS where it says that this RAM is not compatable. Should I contact ASUS support?
[EDIT]
I contacted now the Asus support to get information about compatible RAM.

breadbutt
03-03-2014, 02:36 AM
my expansion slot actually says 1.5v why is that? G750JW-BBI7N05

hmscott
03-04-2014, 12:48 PM
my expansion slot actually says 1.5v why is that? G750JW-BBI7N05

Asus used old sockets for the new DDR3L laptops... they probably have millions of them still to build out into laptops...

Physically compatible, from a time when 1.5v was cool... who woulda thought the next cool thing would be low voltage SODIMM's of the same form factor.

Nothing to worry about, kinda funny really :)

breadbutt
03-05-2014, 01:50 AM
Asus used old sockets for the new DDR3L laptops... they probably have millions of them still to build out into laptops...

Physically compatible, from a time when 1.5v was cool... who woulda thought the next cool thing would be low voltage SODIMM's of the same form factor.

Nothing to worry about, kinda funny really :)
thanks! so I still use 1.35v right?

anyone got a link for a good site to buy 1.35v sticks? I'm gonna try new egg, but looks like most of what they have is 1.5v

aeonmey
03-06-2014, 12:39 AM
memory upgrade opinion needs
i have g750jw db71ca with 12gb (3pcs of hynix 4GB 1Rx8 PC3L-12800s_11-12-B4___HMT451S6AFR8A-PB N0 AA 1302)
and then...
i'm planning to replace it with 2 boxes (2pcs 8GB inside each box) Corsair Vengeance CMSX16GX3M2B1600C9 DDR3L SODIMM PC3-12800 (1600MHz) voltage 1.35-1.5. (full specs: http://www.corsair.com/en-us/vengean...16gx3m2b1600c9 )

any advice/opinion??

SpirituZ
03-13-2014, 08:23 AM
Does upgrading the Ram loses the warranty from the laptop if is not an authorized ASUS Specialist?

sasuke256
03-16-2014, 09:25 AM
you dont loose warranty if you open only the lower side of the laptop :)

dblkk
04-10-2014, 07:55 PM
Does anyone know if it does/should work or why it doesn't work for me?

Crucial Ballistix Sport 8GB 204-Pin DDR3 SO-DIMM DDR3 1600 (PC3 12800) Laptop Memory Model BLS8G3N169ES4

I put it in either slot, and computer wont boot, but take it out and boots just fine.

hmscott
04-10-2014, 10:00 PM
Does anyone know if it does/should work or why it doesn't work for me?

Crucial Ballistix Sport 8GB 204-Pin DDR3 SO-DIMM DDR3 1600 (PC3 12800) Laptop Memory Model BLS8G3N169ES4

I put it in either slot, and computer wont boot, but take it out and boots just fine.

dblkk, so you did already try 1 at a time, and it doesn't work. Well, either it is the rare case of 2 bad SODIMM's, or it is incompatible with the existing factory installed memory.

Here is my response to your other posts:

http://rog.asus.com/forum/showthread.php?45003-New-G750JZ-G750JM-and-G750JS-Gaming-Laptops-Launch-With-Nvidia-GTX-880M-870M-860M&p=391954&viewfull=1#post391954

hemoglobina
04-17-2014, 07:01 PM
Hi, I have a G750JW, which came with 12GB of ram.
I was thinking in upgrading the ram, adding 2 8GB sticks:
http://www.amazon.com/Corsair-Vengeance-Performance-1600MHz-CMSX16GX3M2B1600C9/dp/B00EXPNG5Y/ref=sr_1_6?s=electronics&ie=UTF8&qid=1397759680&sr=1-6&keywords=ddr3l+sodimm

I saw that in the back panel, there is only a 4GB sitck, I assume the rest is inside.

1- Would I have problems if I just add the 16GB to the accesible ports ? (totaling 24GB).
2- Or should I remove all the sticks, and add mine? (totalling 16GB)

Thanks.

Mjag01
04-18-2014, 08:45 PM
Where can you buy memory for a G750jz. I don't like going out on the limb and test on my own. If someone could give me the name and place to buy and 8gb stick. would really appreciate it.
Thanks in advance Mjag01

mintys1
04-18-2014, 09:30 PM
Hynix original 16GB (2 x 8GB), 204-pin SODIMM, DDR3 PC3L-12800, 1600MHz memory module ( HMT41GS6AFR8A-PB )
HMT41GS6AFR8A-PB x 2 1 £119.99 GBP
Got mine here from www.flexxmemory.co.uk

hmscott
04-18-2014, 09:33 PM
Where can you buy memory for a G750jz. I don't like going out on the limb and test on my own. If someone could give me the name and place to buy and 8gb stick. would really appreciate it.
Thanks in advance Mjag01

The memory Asus, and other manufacturers use, changes from time to time, build to build, so you might find Hynix, Samsung, Hitachi, or? memory in your particular build.

Memory performance is sensitive to SODIMM's being the same performance details - speed, latency, and other less visible details. You can get memory from different manufacturers that is the same speed and latency, and find it isn't compatible, especially if you are trying to match 4GB existing SODIMM's to the 8GB SODIMM's you want to add.

The best way to do it is to get 4 of the same SODIMM's and replace all the memory in the G750. But, that is a pain, because it requires disassembly of the top section of the laptop, and pulling the screen to free the top lid to come up.

The 2nd best way, is to use a tool in Windows to read the make/model of your existing memory, and match it with the same make/model, in either the same size or a size up in the model family.

Here are the tools that are easy to use to see the memory details you need to use to look up on the maker site and sellers to find what you need to add memory.

CPU-Z memory tab:
http://www.cpuid.com/softwares/cpu-z/versions-history.html

HWinfo64 Summary pane - memory module drop down right side, main memory pane:
http://www.hwinfo.com/download.php

AIDA64 - engineer version
http://www.aida64.com/downloads

Once you have the memory module part number, you can do a google search, and find the manufacturer site, find the product family page, and get the part number of the 8GB partm, and then google that to find a good source for it. That 8GB module should match the 4GB module specs and allow you to have 2 x 4GB + 2 x 8GB = 24GB

For me, my G750JH had 3 x 8GB, so I only needed the part number from my existing 8GB SODIMM's, and found a source for the same part number to add a 4th, and that worked out great for me - $99 for a 4th 8GB SODIMM.

Let us know what you have installed, and what you find is compatible and how it works for you :)

gazzacbr
04-20-2014, 08:47 PM
Hi,
Question here, what do you folks do to use more than 8+ GB or ram?
Ram is not an upgrade unless you exceede the ram and start paging from disc.
My cad PC at work will only use about 8gb Max with 3d programs running together and office stuff also.

KoolASUS
04-20-2014, 09:15 PM
off-topic subject, but I guess it's a matter of having a "comfortable reserve" : say you play Skyrim + HD-texture and after this, Bioshock Infinite all on Ultra, then you do an intensive web-surfing session. With 16 GB, there will a big chance all data will still "already" be in RAM when you start the cycle again.
Also, softwares (games) become more and more RAM-hungry. (lazy coding?) Remember, back in 2000, the 3Dfx Voodoo2 had 8MB texture RAM..........

hmscott
04-20-2014, 10:14 PM
Hi,
Question here, what do you folks do to use more than 8+ GB or ram?
Ram is not an upgrade unless you exceede the ram and start paging from disc.
My cad PC at work will only use about 8gb Max with 3d programs running together and office stuff also.

How much paging space are you using? If you have programs loaded, and not resident, swapped/paged to disk pagefile, it will be slower than if you have more RAM and keep it all in memory. The filesystem cache will have more RAM to keep files resident instead of needing to load them from disk.

If you have more than enough RAM you can run without pagefile/hiberfil.sys and save space on your boot drive. I run without a pagefile/hiberfil.sys which saves me 32GB + 32GB = 64GB on my 256GB RAID0 SSD boot drive

Virtual machines are why I use so much memory. I keep Linux, WinXP, and beta OS's in VM's,

I have also set up RAMdisks when doing lots of builds to improve throughput, but right now don't have it set up.

What I am saying is you can to explore the new technology and learn to optimize your configuration to use more memory, and if you do put in the extra effort you can speed up and expand your computers functionality with more memory than you currently think you need. :)

basvdelsen
04-25-2014, 09:02 PM
So please clear this up for me, should I get 1600Mhz or 1866Mhz for my g750JX? Because some are saying it can reach 1866Mhz and others say it can't.

And the RAM I'm looking at says SPD Speed 1600Mhz and Tested Speed 1866Mhz. What does that mean?

hmscott
04-26-2014, 07:35 AM
So please clear this up for me, should I get 1600Mhz or 1866Mhz for my g750JX? Because some are saying it can reach 1866Mhz and others say it can't.

And the RAM I'm looking at says SPD Speed 1600Mhz and Tested Speed 1866Mhz. What does that mean?

The Haswell was promised to reach 1866mhz at some point before release, but on release only lists 1600mhz. There is one report from a user that installed G.skill 1866mhz memory and posted screenshots, but noone else has reported success on that or other 1866mhz memory.

Earlier in this thread:
http://rog.asus.com/forum/showthread.php?33744-Upgraders-1.35V-memory-is-required!&p=316319&viewfull=1#post316319

It isn't much more $ than the 1600mhz memory, but the commitment is that you need to replace all the memory in the G750, which requires pulling the screen and the top keyboard lid to get at the top 2 SODIMM sockets to remove that 1600mhz memory.

If you do it, report back here :)

The other route is to find out what memory the laptop came with and adding more of the same, or replacing the bottom 2 SODIMM's with the 8G version of the same memory family.

It is easier to get compatible memory from the same make / model / line of memory. Matching memory specs works sometimes, but f you rely on reports from others of compatible memory that works in their laptop, unless your laptop came with the same memory their laptop came with it might not work.

Asus and other manufacturers install different make / model memory in the same model laptops so you need to know what you have installed before looking for compatible memory.

Let us know what you go with and how it works out for you :)

basvdelsen
04-27-2014, 09:01 AM
Alright, but will the difference between 1600 and 1866 be significant enough to even notice? Because the G.Skills are available in my country but they are 40 bucks more than a 1600 from a different brand.

hmscott
04-27-2014, 09:30 PM
Alright, but will the difference between 1600 and 1866 be significant enough to even notice? Because the G.Skills are available in my country but they are 40 bucks more than a 1600 from a different brand.

If you are going to spend the effort to replace all the SODIMM's, popping the screen and pulling the top keyboard panel, it is going to be worth putting in the best memory you can afford - and test it before you put it all back together :)

The actual difference in performance will be minimal, but measurable - if it is recognized as 1866mhz memory. Just because 1 user got it to run doesn't mean it will work the same in every G750 - likely yes, for sure - IDK...

Let us know how it works out!

sni511per
05-20-2014, 04:44 PM
Hi guys.. Please I have questions;
1- Does Asus ROG G750 have mSATA. ! Because in all pictures & videos I saw. I couldn't see it.
And they said it has (2×SSD) & (1×HDD)..
I am talking about G750JZ.

Because I plan this days to buy it.
And plan to replace one of the SSD or the HDD
with 1TB Samsung SSD mSATA.

And about the RAM, My eyes on 1866Mhz 4×8 . 1.35v
But not now.the next month or when I make sure it will fit it.
And about the ram I found same brand of the RAM 2kind on singal and the other dual. . !

What should I choose. I wanna 4×8=32 of course :)

Thanks a lots For any help.

hmscott
05-23-2014, 09:59 AM
Hi guys.. Please I have questions;
1- Does Asus ROG G750 have mSATA. ! Because in all pictures & videos I saw. I couldn't see it.
And they said it has (2×SSD) & (1×HDD)..
I am talking about G750JZ.

Because I plan this days to buy it.
And plan to replace one of the SSD or the HDD
with 1TB Samsung SSD mSATA.

And about the RAM, My eyes on 1866Mhz 4×8 . 1.35v
But not now.the next month or when I make sure it will fit it.
And about the ram I found same brand of the RAM 2kind on singal and the other dual. . !

What should I choose. I wanna 4×8=32 of course :)

Thanks a lots For any help.

Read through this thread, starting on page 7, along with links to G750 disassembly article / pictures / video - it isn't something you want to take on causally :)

http://rog.asus.com/forum/showthread.php?33744-Upgraders-1.35V-memory-is-required!&p=316319&viewfull=1#post316319

http://forum.notebookreview.com/asus-gaming-notebook-forum/726296-asus-g750-disassembly.html

http://www.youtube.com/watch?v=tuToMlzZ-CA

The 1TB SSD will fit in Bay 2, but I wouldn't use it for a boot drive, the 2 x M.2 SATA SSD will be faster than any single 2.5" SATA SSD so you will want to keep it as the boot / OS drive.

You will want to combine partitions on the boot SSD, after backing up the recovery partition, and combine the free space into a larger C partition.

If you don't want to open the G750 up to replace all 4 SODIMM's, and your G750JZ comes with 2 or 3 8GB SODIMM"s - check what make / model they are and google for a 3 and 4th SODIMM to reach 32GB.

Here is the one I purchased, again double check to make sure you have this same model installed in your laptop already, you need to add the same as you already have for compatibility. The G750's are very sensitive to trying to mix different make / model SODIMM's even if they are the same spec on the surface, they will cause problems... many people have tried and reported failure.

http://www.ebay.com/itm/New-Apple-Hynix-8GB-RAM-SODIMM-Laptop-Memory-HMT41GS6AFR8A-PB-DDR3-1600MHz-/390742229259?

Let us know what you end up doing :)

SupaFaztG
05-26-2014, 06:27 PM
This is the 16GB RAM upgrade kit I ordered for my G750 JX-TB71...

Corsair Vengeance Performance 16GB DDR3L (2X8GB) 1600MHz PC3 12800 Laptop Memory Kit CMSX16GX3M2B1600C9

http://www.amazon.com/Corsair-Vengeance-Performance-1600MHz-CMSX16GX3M2B1600C9/dp/B00EXPNG5Y/ref=sr_1_fkmr1_3?s=electronics&ie=UTF8&qid=1400777913&sr=1-3-fkmr1&keywords=16GB+Kit+%288GBx2%29+DDR3L+1600+MT%2Fs+%2 8PC3-12800%29+CL9+1.35V+SODIMM+204-Pin+Memory+BLS2K8G3N169ES4

...DDR3L 1600MHz @ 1.35V!!!

hmscott
05-26-2014, 11:43 PM
This is the 16GB RAM upgrade kit I ordered for my G750 JX-TB71...

Corsair Vengeance Performance 16GB DDR3L (2X8GB) 1600MHz PC3 12800 Laptop Memory Kit CMSX16GX3M2B1600C9

http://www.amazon.com/Corsair-Vengeance-Performance-1600MHz-CMSX16GX3M2B1600C9/dp/B00EXPNG5Y/ref=sr_1_fkmr1_3?s=electronics&ie=UTF8&qid=1400777913&sr=1-3-fkmr1&keywords=16GB+Kit+%288GBx2%29+DDR3L+1600+MT%2Fs+%2 8PC3-12800%29+CL9+1.35V+SODIMM+204-Pin+Memory+BLS2K8G3N169ES4

...DDR3L 1600MHz @ 1.35V!!!

SupaFaztG, there have been a number of people complaining about incompatibility with the Corsair Vengeance.

Although Corsair say they are 1.35v compatible, the are SPD 1.5v, and the G750 runs them at 1.5v. That is bad enough, but apparently they are also not stable. Some have gotten 1 SODIMM to run, but not 2.

Initially Corsair listed them as 1.5v/1.35v in the spec listing. Now they say 1.35v compatible, but you have to dig to find the 1.5v SPD statement:
http://www.amazon.com/Corsair-Vengeance-Performance-1600MHz-CMSX16GX3M2B1600C9/dp/B00EXPNG5Y
Technical Specifications

Size 16GB (2 x 8GB)
Format - 204 Pin DDR3L SODIMM
Tested Voltage 1.35
=>SPD Voltage 1.5
Speed Rating PC3-12800 (1600MHz)
SPD Speed 1600MHz
Tested Speed 1600Mhz
Tested Latency 9-9-9-24
SPD Latency 9-9-9-24

The best way to extend the memory in the G750 is to use a program like CPU-Z, hwinfo64, aida64 to find the make and model number for the memory that the G750 came with, and do a google search to find the best price, and order those. If your G750 has 4GB SODIMM's, then you can find the like 8GB part from the make/model family and that will work. Or, if you don't mind voiding the warranty, you can replace all 4 SOIMM's with true 1.35v memory - SPD 1.35v - Asus puts in 1.28v memory.

Here is what is in my G750JH

37021

I had 3 of the same Hyundai HMT41GS6AFR8A-PB, so I googled the part number and purchased one of these as the 4th SODIMM for 32GB:

http://www.ebay.com/itm/New-Apple-Hynix-8GB-RAM-SODIMM-Laptop-Memory-HMT41GS6AFR8A-PB-DDR3-1600MHz-/390742229259

jarpatus
05-28-2014, 12:36 PM
My original memories (2x4GB) were Hynix HMT451S6AFR8A-PB and I added one HMT41GS6AFR8A-PB (8GB). So now I have 16GB memory with 3 memory sticks and it work's even in dual channel mode without any problems even though one stick is 8GB and rest are 4GB (!). According to HWINFO64 memory specs are identical to the tiniest details, only difference being size and manufacture week.

So yeah use CPU-Z or HWINFO64 to to check model of your memories and try to get the same... I got mine 8GB stick from eBay.

SupaFaztG
05-28-2014, 01:45 PM
SupaFaztG, there have been a number of people complaining about incompatibility with the Corsair Vengeance.

Although Corsair say they are 1.35v compatible, the are SPD 1.5v, and the G750 runs them at 1.5v. That is bad enough, but apparently they are also not stable. Some have gotten 1 SODIMM to run, but not 2.

Initially Corsair listed them as 1.5v/1.35v in the spec listing. Now they say 1.35v compatible, but you have to dig to find the 1.5v SPD statement:
http://www.amazon.com/Corsair-Vengeance-Performance-1600MHz-CMSX16GX3M2B1600C9/dp/B00EXPNG5Y
Technical Specifications

Size 16GB (2 x 8GB)
Format - 204 Pin DDR3L SODIMM
Tested Voltage 1.35
=>SPD Voltage 1.5
Speed Rating PC3-12800 (1600MHz)
SPD Speed 1600MHz
Tested Speed 1600Mhz
Tested Latency 9-9-9-24
SPD Latency 9-9-9-24

The best way to extend the memory in the G750 is to use a program like CPU-Z, hwinfo64, aida64 to find the make and model number for the memory that the G750 came with, and do a google search to find the best price, and order those. If your G750 has 4GB SODIMM's, then you can find the like 8GB part from the make/model family and that will work. Or, if you don't mind voiding the warranty, you can replace all 4 SOIMM's with true 1.35v memory - SPD 1.35v - Asus puts in 1.28v memory.

Here is what is in my G750JH

37021

I had 3 of the same Hyundai HMT41GS6AFR8A-PB, so I googled the part number and purchased one of these as the 4th SODIMM for 32GB:

http://www.ebay.com/itm/New-Apple-Hynix-8GB-RAM-SODIMM-Laptop-Memory-HMT41GS6AFR8A-PB-DDR3-1600MHz-/390742229259

I literally JUST go these from the postman as I'm reading this. Not happy.

Isn't it something that I research enough to buy what is CLEARLY advertised as DDR3L AND 1.35V and you're telling me they're STILL not the right one's?! WOW!

That is unfortunate to say the least and a big hassle now.

I don't know how they can advertise this the way they do and still not be the proper RAM.

So these FOR SURE will either not work, are unstable and/or, more importantly, damage my brand new G750 JX?

Corsair always had a good track record and rep as far as I knew. I spent a lot of time thinking I was buying higher-grade memory.

What bothers me even more is that it DOESN'T list them as compatible, at least not currently, it actually outright STATES "Voltage: 1.35V" in the description at the top!

Here I am thinking I did a fine job of research and in finally finding the absolute correct RAM, and it's still not right?! LOL *sigh*

Also, might as well ask since I can't believe what an ad says now, can I put 8GB sticks in along with 4GB sticks? Or do they all have to be the same? I know you referenced this but want to be sure.

I really appreciate the heads up on this, and with all of the links! Just disappointed in them.

Thank you!

SupaFaztG
05-28-2014, 01:54 PM
My original memories (2x4GB) were Hynix HMT451S6AFR8A-PB and I added one HMT41GS6AFR8A-PB (8GB). So now I have 16GB memory with 3 memory sticks and it work's even in dual channel mode without any problems even though one stick is 8GB and rest are 4GB (!). According to HWINFO64 memory specs are identical to the tiniest details, only difference being size and manufacture week.

So yeah use CPU-Z or HWINFO64 to to check model of your memories and try to get the same... I got mine 8GB stick from eBay.

Really appreciate the feedback. And as I responded to hmscott here, am very disappointed in the way they're clearly represented (or more correctly MIS-represented!) as being an absolutely compatible RAM kit that you would need to use for these systems!

Thanks again!

hmscott
05-28-2014, 08:44 PM
I literally JUST go these from the postman as I'm reading this. Not happy.

Isn't it something that I research enough to buy what is CLEARLY advertised as DDR3L AND 1.35V and you're telling me they're STILL not the right one's?! WOW!

That is unfortunate to say the least and a big hassle now.

I don't know how they can advertise this the way they do and still not be the proper RAM.

So these FOR SURE will either not work, are unstable and/or, more importantly, damage my brand new G750 JX?

Corsair always had a good track record and rep as far as I knew. I spent a lot of time thinking I was buying higher-grade memory.

What bothers me even more is that it DOESN'T list them as compatible, at least not currently, it actually outright STATES "Voltage: 1.35V" in the description at the top!

Here I am thinking I did a fine job of research and in finally finding the absolute correct RAM, and it's still not right?! LOL *sigh*

Also, might as well ask since I can't believe what an ad says now, can I put 8GB sticks in along with 4GB sticks? Or do they all have to be the same? I know you referenced this but want to be sure.

I really appreciate the heads up on this, and with all of the links! Just disappointed in them.

Thank you!

SupaFaztG, at least you caught it before putting it in and running it for a long time... there is a response on that review thread at Amazon from a guy with a G750 that replaced all 4 of his SODIMM's, which would work but run at 1.5v without him knowing it - that's why it is always a good idea to get monitoring software installed that can see what is going on to confirm what you think is going on inside.

Here is the link on the Corsair site, check the specs tab, it says the same thing as the Amazon page, Tested at 1.35v - SPD at 1.5v.
http://www.corsair.com/en-us/vengeance-16gb-high-performance-laptop-memory-upgrade-kit-cmsx16gx3m2b1600c9

37064

Technically, tested at 1.35v covers their butt's, as if our G750 BIOS allowed us to force SODIMM voltage to 1.35v, the memory would be tested to support it. Unfortunately reports are that the actual voltage the G750 runs these at is 1.5v, and not 1.35v.

That could change with BIOS updates - Asus, do you want to issue a BIOS update that forces 1.35v max? I would think that would make sense. Maybe even put out a warning that memory is SPD 1.5v, forcing 1.35v for to protect the CPU?

Ninemeister
05-29-2014, 01:47 AM
By suggestion of user hmscott in another thread, here's a summary of result from a memory upgrade on my G750JX.

This model was originally installed with 16GB (2x4) Samsung PC3 12800S chips. Clocked in at 1600MHz (800MHz) with timings of 11-11-11-28-208-2T. I removed all four SODIMMs and replaced the slots under the keyboard with two 8GB Crucial Ballistix BLS8G3N18AES4 SODIMMS. The advertised timings are 10-10-10-30 @ 1866MHz (933MHz) and 1.35v. Here are the installed results...

37070

Unfortunately since the G750JZ isn't XMP compatible I was unable to reach the rated tRAS of 30, instead loosening up down to 32 clocks. However, much to my surprise I was able to maintain a command rate of 1T @ 933MHz. I'll take that.

After replacing, I ran 3DMark 11 for five consecutive runs to get a good feel for the performance average. That and to smooth out results from caching. Here are the results...

37071

I'm tempted to try the Corsair Vengeance CMSX16GX3M2B2133C11 8GB sticks. Rated at 11-11-11-27 @ 2133MHz (1066MHz) with a tRAS of 27, it's very tempting.

hmscott
05-29-2014, 02:06 AM
By suggestion of user hmscott in another thread, here's a summary of result from a memory upgrade on my G750JX.

This model was originally installed with 16GB (2x4) Samsung PC3 12800S chips. Clocked in at 1600MHz (800MHz) with timings of 11-11-11-28-208-2T. I removed all four SODIMMs and replaced the slots under the keyboard with two 8GB Crucial Ballistix BLS8G3N18AES4 SODIMMS. The advertised timings are 10-10-10-30 @ 1866MHz (933MHz) and 1.35v. Here are the installed results...

37070

Unfortunately since the G750JZ isn't XMP compatible I was unable to reach the rated tRAS of 30, instead loosening up down to 32 clocks. However, much to my surprise I was able to maintain a command rate of 1T @ 933MHz. I'll take that.

After replacing, I ran 3DMark 11 for five consecutive runs to get a good feel for the performance average. That and to smooth out results from caching. Here are the results...

37071

I'm tempted to try the Corsair Vengeance CMSX16GX3M2B2133C11 8GB sticks. Rated at 11-11-11-27 @ 2133MHz (1066MHz) with a tRAS of 27, it's very tempting.

Update: Ninemeister, I just noticed that your Crucial Ballistix BLS8G3N18AES4 CPU-Z SPD @ 1866mhz (932mhz) shows 1.5v... so you are operating at 1.5v... not good, sorry.

Ninemeister, the 8GB Crucial Ballistix BLS8G3N18AES4 SODIMM are a great find :)

http://www.newegg.com/Product/Product.aspx?Item=N82E16820148733&cm_re=BLS8G3N18AES4-_-20-148-733-_-Product

Corsair Vegeance are being a bit deceptive with their voltage ratings. They say tested at 1.35v but list an SPD of 1.5v for the CMSX16GX3M2B1600C9, and now for the CMSX16GX3M2B2133C11 they say "1.35V (also supports operation at 1.5V)", which is what they used to say for the CMSX16GX3M2B1600C9, which is code for 'these are 1.5v memory able to run at 1.35v'.

The G750 seems to want to run Corsair Vengeance 1.5v SPD SODIMM's at 1.5v real, instead of the 1.35v tested - and the Asus G750 BIOS doesn't let us force the voltage setting.

Check the CMSX16GX3M2B2133C11 Specifications tab on newegg,
http://www.newegg.com/Product/Product.aspx?Item=N82E16820233621&cm_re=CMSX16GX3M2B2133C11-_-20-233-621-_-Product

37073

Ninemeister
05-29-2014, 02:56 AM
I see. I think I see what's going on. They're having issues with how to advertise having a varying operating frequency. They're able to maintain the higher operating frequency by upping the voltage. Possibly the same goes for the PC3 1600 ram in the previous posts; they're most likely 1066 or 1333 chips (1.35v) that are capable of running at 1600 (1.5v). The G750 is also running the highest speed possible, so it's upping to the 1.5v required.

Something tells me those chips won't operate properly at 1600MHz @ 1.35v. They really should be more specific with the speeds and required voltage.

hmscott
05-29-2014, 05:11 AM
I see. I think I see what's going on. They're having issues with how to advertise having a varying operating frequency. They're able to maintain the higher operating frequency by upping the voltage. Possibly the same goes for the PC3 1600 ram in the previous posts; they're most likely 1066 or 1333 chips (1.35v) that are capable of running at 1600 (1.5v). The G750 is also running the highest speed possible, so it's upping to the 1.5v required.

Something tells me those chips won't operate properly at 1600MHz @ 1.35v. They really should be more specific with the speeds and required voltage.

Update: Ninemeister, I just noticed that your Crucial Ballistix BLS8G3N18AES4 CPU-Z SPD @ 1866mhz (932mhz) shows 1.5v... so you are operating at 1.5v... not good, sorry.

Ninemeister, I am thinking Corsair set up all their builds for these SODIMM's for an SPD of 1.5v, and on systems that will allow setting the RAM voltage to 1.35v, it is tested to work, but on systems like our G750's that read the SPD of 1.5v - and don't allow overriding - it will run at 1.5v.

It would be nice if Asus recognized the SPD, but allowed overriding it to 1.35v, so we could use these SODIMM's. In fact, if 1.5v isn't safe to use, why is the BIOS allowing the voltage to be set by SPD to 1.5v?

Anyway, good thing the Corsair and G.skill 1866mhz SODIMM's have an SPD of 1.35v, and the Asus provided Hynix SODIMM's have an SPD of 1.28v :)

Ninemeister
05-29-2014, 09:52 AM
Well nuts. I think as a way of subconsciously avoiding defeat I just ordered the F3-2133C11D-16GRSL. G.Skill Ripjaw 2133MHz 1.35v 16Gb kit. Newegg has them for $200 with shipping. A little pricey, but I suppose someone has to be the guinea pig!

hmscott
05-29-2014, 11:53 AM
Well nuts. I think as a way of subconsciously avoiding defeat I just ordered the F3-2133C11D-16GRSL. G.Skill Ripjaw 2133MHz 1.35v 16Gb kit. Newegg has them for $200 with shipping. A little pricey, but I suppose someone has to be the guinea pig!

Ninemeister, cool :)

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231760&cm_re=F3-2133C11D-16GRSL-_-20-231-760-_-Product

These are tried and tested good, so hopefully the F3-2133C11D-16GRSL will work too :)
http://rog.asus.com/forum/showthread.php?33744-Upgraders-1.35V-memory-is-required!&p=316319&viewfull=1#post316319

Ninemeister
05-30-2014, 01:46 AM
Turns out we can't even re-flash the SPD EEPROM on boards with a Haswell SMBus controller. The BIOS is preventing all writes. After trying numerous flashing utilities I was greeted with the following message while using Thaiphoon Burner;

"Writes to SMBus addresses 50h -57h are disabled by BIOS.
You cannot Reprogram SPD EEPROM on this motherboard."

I'm curious if getting around this would be as simple as installing the memory on a non-haswell board, and then attempt. A BIOS reflash with the write-prevent removed would be nice.

Understanding DDR3 Serial Presence Detect (SPD) Table
http://www.simmtester.com/page/news/showpubnews.asp?num=153

hmscott
05-30-2014, 01:53 AM
Turns out we can't even re-flash the SPD EEPROM on boards with a Haswell SMBus controller. The BIOS is preventing all writes. After trying numerous flashing utilities I was greeted with the following message while using Thaiphoon Burner;

"Writes to SMBus addresses 50h -57h are disabled by BIOS.
You cannot Reprogram SPD EEPROM on this motherboard."

I'm curious if getting around this would be as simple as installing the memory on a non-haswell board, and then attempt. A BIOS reflash with the write-prevent removed would be nice.

Understanding DDR3 Serial Presence Detect (SPD) Table
http://www.simmtester.com/page/news/showpubnews.asp?num=153

If it was that easy, don't you think Corsair would have done it themselves and re-worked a few thousand SODIMM's with the updated 1.35v values for Haswell laptops?

Ninemeister
05-30-2014, 02:43 AM
If it was that easy, don't you think Corsair would have done it themselves and re-worked a few thousand SODIMM's with the updated 1.35v values?

Maybe. I don't know. Larger manufacturing companies like that will just tend to crank out their product and if nothing is detrimentally defective with it, but still functions fine, they won't worry about a recall. Automotive manufactures do it all the time. Why waste more money on something that doesn't have that large of a customer base (relatively) and will be replaced with something else in 6 months? It sucks for us, but makes sense.

This weekend I can get a hold of a Nehalem and possibly a Sandy laptop. Weekend project I suppose? :)

SupaFaztG
05-30-2014, 02:35 PM
SupaFaztG, at least you caught it before putting it in and running it for a long time... there is a response on that review thread at Amazon from a guy with a G750 that replaced all 4 of his SODIMM's, which would work but run at 1.5v without him knowing it - that's why it is always a good idea to get monitoring software installed that can see what is going on to confirm what you think is going on inside.

Here is the link on the Corsair site, check the specs tab, it says the same thing as the Amazon page, Tested at 1.35v - SPD at 1.5v.
http://www.corsair.com/en-us/vengeance-16gb-high-performance-laptop-memory-upgrade-kit-cmsx16gx3m2b1600c9

37064

Technically, tested at 1.35v covers their butt's, as if our G750 BIOS allowed us to force SODIMM voltage to 1.35v, the memory would be tested to support it. Unfortunately reports are that the actual voltage the G750 runs these at is 1.5v, and not 1.35v.

That could change with BIOS updates - Asus, do you want to issue a BIOS update that forces 1.35v max? I would think that would make sense. Maybe even put out a warning that memory is SPD 1.5v, forcing 1.35v for to protect the CPU?

So I followed the ensuing discussion here between you and Ninemeister and must say a little above my head in all the technical stuff, but message received loud and clear! LOL

Bottom line is that the BIOS won't keep the voltage at 1.35V, period! And eventually will damage the system.

It is unfortunate to say the least that they manufactured 2 different kits, 1.35V and 1.5V, at least as advertised, and that it doesn't matter, at least with OUR systems anyway.

But you hit the nail on the head - better I know now BEFORE I put them in, and can still return and get another appropriate kit.

So I'll follow all the info here and go on from there.

Just one more thing then please...I have 2 X 8GB already installed from the factory. I don't HAVE to have the EXACT same memory that's already installed, right?

May sound like an obvious question and answer, but I'm a little gun-shy now.

Thanks again for ALL of your help in this thread!

SupaFaztG
05-30-2014, 02:41 PM
I see. I think I see what's going on. They're having issues with how to advertise having a varying operating frequency. They're able to maintain the higher operating frequency by upping the voltage. Possibly the same goes for the PC3 1600 ram in the previous posts; they're most likely 1066 or 1333 chips (1.35v) that are capable of running at 1600 (1.5v). The G750 is also running the highest speed possible, so it's upping to the 1.5v required.

Something tells me those chips won't operate properly at 1600MHz @ 1.35v. They really should be more specific with the speeds and required voltage.

EXACTLY!

I would like to thank you too for all of your technical expertise here as well as hmscott's.

I'm following both of your posts here religiously! LOL

Gotta return the sticks and order "true" DDR3L 1.35V sticks.

Thanks!

P.S. If I didn't look into this further here I would've thought I had gotten the absolute correct RAM kit! I just feel sorry for all the guys at AMAZON commenting on how wonderful their upgrades are with this kit on their systems knowing that they're just headed for trouble that wasn't their fault!

Ninemeister
05-30-2014, 10:01 PM
EXACTLY!

I would like to thank you too for all of your technical expertise here as well as hmscott's.

I'm following both of your posts here religiously! LOL

Gotta return the sticks and order "true" DDR3L 1.35V sticks.

Thanks!

P.S. If I didn't look into this further here I would've thought I had gotten the absolute correct RAM kit! I just feel sorry for all the guys at AMAZON commenting on how wonderful their upgrades are with this kit on their systems knowing that they're just headed for trouble that wasn't their fault!

Well, thank you for the kudos SupaFaztG.

I'm not sure if I would call it progress, but i've successfully opened up the G750JXAS209 BIOS file and can read all values. I found one area that contains one set of DDR profiles, but nothing yet that relates to the SMBus lockout. Lots of information to sift through.

If all goes well, I might be able to make a custom BIOS with the lockout removed, or possibly one that limits memory voltage to 1.35v.

hmscott
05-31-2014, 06:17 AM
...
Just one more thing then please...I have 2 X 8GB already installed from the factory. I don't HAVE to have the EXACT same memory that's already installed, right?
May sound like an obvious question and answer, but I'm a little gun-shy now.
Thanks again for ALL of your help in this thread!

SupaFaztG, bingo! :)

It's so obvious, most people miss it. Yes, you do need to get the exact same make/model family part to be the most compatible!

You might find memory that will be compatible by matching the specs precisely - but it is hit or miss, with the misses being most disappointing.

Why not just get the same make/model, they are great low power, 1.28v(!) SODIMM's, and except for the very highest end memory, you won't be able to measure let alone notice the difference, why not just get the same memory?

For some reason the human brain wants to outsmart the obvious... it is a classic human fault - rebel against the obvious :)

Ok, so, beyond the nickle psychology, the easiest and most successful path to follow is to use CPU-Z, or some SPD reading program to find out the Make / Model SODIMM's you already have installed.

If they are 8GB you can just google their part number and get more of the same to fill out to 32GB.

If your G750 came with 4GB SODIMM's, and you aren't going to replace all the SODIMM's, you can google the " part number + 8GB " and you should run across pages with all the SODIMM family members for that 4GB part - and then google the part number for the 8GB SODIMM listed, and those will be compatible with the 4GB SODIMM's already installed.

Please come back and post the details of your memory upgrade :)

bygone
05-31-2014, 09:48 AM
pls giv me QVL for my g750js RAMs ... that make things easier tnx

SupaFaztG
05-31-2014, 04:06 PM
SupaFaztG, bingo! :)

It's so obvious, most people miss it. Yes, you do need to get the exact same make/model family part to be the most compatible!

You might find memory that will be compatible by matching the specs precisely - but it is hit or miss, with the misses being most disappointing.

Why not just get the same make/model, they are great low power, 1.28v(!) SODIMM's, and except for the very highest end memory, you won't be able to measure let alone notice the difference, why not just get the same memory?

For some reason the human brain wants to outsmart the obvious... it is a classic human fault - rebel against the obvious :)

Ok, so, beyond the nickle psychology, the easiest and most successful path to follow is to use CPU-Z, or some SPD reading program to find out the Make / Model SODIMM's you already have installed.

If they are 8GB you can just google their part number and get more of the same to fill out to 32GB.

If your G750 came with 4GB SODIMM's, and you aren't going to replace all the SODIMM's, you can google the " part number + 8GB " and you should run across pages with all the SODIMM family members for that 4GB part - and then google the part number for the 8GB SODIMM listed, and those will be compatible with the 4GB SODIMM's already installed.

Please come back and post the details of your memory upgrade :)

Well hmscott,

Occam's razor, right? LOL

I actually took pics of the RAM installed and matched it EXACTLY (even the color-blue! LOL) to this link...

http://www.ebay.com/itm/like/261476195024?lpid=82

The seller advertises them used with the caveat “This comes from one of our perfectly new machines and this ships to you immediately! :-)”

The only difference in the very last 4 digits which I assume are individual part #'s??? Mine say 1343, this says 1320. All else is EXACT!

Anyhow, did I get it right? :rolleyes:

Seems reasonable!

I await your "approval"....:confused::)

Thanks again for helping me!

SupaFaztG
05-31-2014, 04:18 PM
Well, thank you for the kudos SupaFaztG.

I'm not sure if I would call it progress, but i've successfully opened up the G750JXAS209 BIOS file and can read all values. I found one area that contains one set of DDR profiles, but nothing yet that relates to the SMBus lockout. Lots of information to sift through.

If all goes well, I might be able to make a custom BIOS with the lockout removed, or possibly one that limits memory voltage to 1.35v.

You are very welcome Ninemeister!

That would be a great accomplishment and would help a LOT of people!

I posted this to hmscott's replt to my most recent post to him...

http://www.ebay.com/itm/like/261476195024?lpid=82

These are ECAXTLY what my laptop is using!

Hopefully I'll be good now. :)

Thanks!

hmscott
05-31-2014, 11:36 PM
Well hmscott,

Occam's razor, right? LOL

I actually took pics of the RAM installed and matched it EXACTLY (even the color-blue! LOL) to this link...

http://www.ebay.com/itm/like/261476195024?lpid=82

The seller advertises them used with the caveat “This comes from one of our perfectly new machines and this ships to you immediately! :-)”

The only difference in the very last 4 digits which I assume are individual part #'s??? Mine say 1343, this says 1320. All else is EXACT!

Anyhow, did I get it right? :rolleyes:

Seems reasonable!

I await your "approval"....:confused::)

Thanks again for helping me!

SupaFaztG, please post the snippet of CPU-Z showing the part number for both of the SODIMM's you have installed, the SPD tab.

You do take a risk when buying pulls from computers, used memory is a gamble, but going by Ebay rating, it looks like he stands by his sales, so if you run into a problem you can return or swap them - make sure you check them out as soon as you get them :)

Razorback92
06-04-2014, 03:37 AM
Looking through all 18 pages so far, there are a number of people that have tried a few different brands that did not run at SPD 1.35V (e.g., Corsair Vengeance, Crucial Ballistix) even though their packaging indicated otherwise. Can we PLEASE get a listing of which RAM sticks are proven to work with the G750 laptops and links to where they can be purchased (i.e., hopefully beyond just the Hynix sticks on eBay)? Similarly, we could also list those DDR3 sticks you should steer away from (at least until proven they actually do run at 1.35V).

For example, I have a G750JM and have confirmed with CPU-Z that it has 2 4Mb Hynix DDR3 sticks running at 1.35V with CL 11/11/11/28. Does anybody know of other DDR3L memory sticks that would pair well with these? Additional 4 Gb and 8 Gb Hynix sticks are available on eBay, but surely there must be other options available from Amazon, Newegg, Best Buy, etc., right? Would these work as follows:

Amazon: Kingston 8 Gb DDR3L 1.35V CL11 (http://www.amazon.com/Kingston-Technology-1600MHz-PC3-12800-KVR16LS11/dp/B00CQ35HBQ/ref=sr_1_1?ie=UTF8&qid=1401852355&sr=8-1&keywords=laptop+memory+ddr3l)

Amazon: Crucial 8Gb DDR3 1.35V/1.5V CL11 (http://www.amazon.com/Crucial-PC3-12800-204-Pin-Notebook-CT2KIT51264BF160B/dp/B005LDLVAO/ref=sr_1_12?ie=UTF8&qid=1401852473&sr=8-12&keywords=laptop+memory+ddr3l)

Best Buy: PNY 16 Gb DDR3 1.35V CL11 (http://www.bestbuy.com/site/pny-2-x-8gb-ddr3-low-voltage-notebook-memory/5745162.p?id=1219153729589&skuId=5745162)

I am really tempted to try out those PNY sticks from Best Buy given the price point.

Ninemeister
06-04-2014, 03:44 AM
Well, it's official. The G750 Haswell boards apparently support 2133MHz (1066MHz) memory. With 1.35v modules nonetheless. Here's the cpu-z snippet.

37345

The ram is the following.

37346

hmscott
06-04-2014, 04:03 AM
Well, it's official. The G750 Haswell boards apparently support 2133MHz (1066MHz) memory. With 1.35v modules nonetheless. Here's the cpu-z snippet.
37345
The ram is the following.
37346

Ninemeister, wow, that is spectacular :)

I can't wait to see your benchmarks, and Realbench 2.2 score now!

Ninemeister
06-04-2014, 10:15 AM
Ninemeister, wow, that is spectacular :)

I can't wait to see your benchmarks, and Realbench 2.2 score now!

So far on RealBench it's scored 63754. Again, I also ran five consecutive 3DMark 11 benchmarks to get an average and compared them to the 10-10-10-32-281-1T 1866MHz and 11-11-11-28-208-2T 1600MHz scores. The following are the results;

37350

Just to clarify, since I didn't specify with the first benchmark, the benchmarks were performed with 3DMark 11 Basic running at 1280x720 (which is the only option for the Basic version).

As you can see there is a substantial increase in the physics score with 3DMark 2011. Based on that, there is apparently a bottleneck with the lower-clocked memory when it comes to the Haswell CPUs. They love higher frequencies, at least when it comes to the CPU and physics processing. Also, keep in mind that the 3DMark physics score is not related to Nvidia's PhysX processing. 'PhysX' is entirely GPU dependent. Physics is CPU bound.

If I attain my goal of unlocking the BIOS to enable adjusting memory timings, there could potentially be a jump in benchmarks. I'd love to see what would happen with de-clocking from 1066MHz (2133MHz) to 683MHz (1366MHz), and then tighten timing down to around 7-7-7-20-1T, or lower ... that would be freaking awesome.

Razorback92a
06-11-2014, 02:14 AM
For anybody wondering about a specific brand and model of DDR3L RAM that will work with these new ASUS ROG G750 laptops, I can confirm that the Best Buy PNY 16Gb DDR3L 1.35v CL11 (http://www.bestbuy.com/site/pny-2-x-8gb-ddr3-low-voltage-notebook-memory/5745162.p?id=1219153729589&skuId=5745162) memory does work, matches the CL rating of the original installed memory (i.e., 2 x Hynix 4 Gb DDR3L 1.35V CL on my G750M) and shows an SPD value of 1.35V using CPU-Z. And, the price was better than the others as well.

hmscott
06-11-2014, 02:18 AM
For anybody wondering about a specific brand and model of DDR3L RAM that will work with these new ASUS ROG G750 laptops, I can confirm that the Best Buy PNY 16Gb DDR3L 1.35v CL11 (http://www.bestbuy.com/site/pny-2-x-8gb-ddr3-low-voltage-notebook-memory/5745162.p?id=1219153729589&skuId=5745162) memory does work and shows an SPD value of 1.35V using CPU-Z. And, the price was better than the others as well.

Razorback92a, thanks!

Can you please post the make/model/size and part number of the original memory that came with your G750? That way we know what is compatible with the PNY MN16384KD3-1600-LV 8GB.

This is important to know for other people that have the same G750, but might have been built with different make/model of memory, and that might not be compatible with the PNY MN16384KD3-1600-LV 8GB SODIMM.

For compatibility it is important to know the make/model/size of both the existing memory and the added memory.

What memory stress tests did you run to check for stability?

Razorback92a
06-11-2014, 03:41 AM
The memory modules that came stock with my ASUS G750JM were 2 x 4Gb sticks of Hyundai (Hynix) DDR3L 1.35V CL11, part number of HMT451S6AFR8A-PB. At this point I was just happy to find actual memory sticks with the proper matching specifications as the original memory in the machine. I have not run a memory stress test on it. What do you recommend?

Note that this is after I initially bought (and then returned unopened) 2 x 8 Gb sticks of Corsair Vengeance 1.5V memory from the Best Buy sales guy that heartily recommended it as good memory for my G750. To be fair, he had no idea about the 1.35V requirement, nor did anybody else in their Geek squad department (one of whom also owned a G750M and had the Corsair 1.5V memory installed). I sent them the link to this thread. I had no idea about the 1.35V requirement either until I saw this sticky thread while I was trying to learn how to use ASUS Backtracker to move my original OS to a new SSD. If I hadn't seen it, I am sure I would be sitting here right now with that Corsair 1.5V memory crammed in to my sockets and sadly ignorant of the potential problems forthcoming. So, this thread really saved the day for me, thanks to ASUS for posting and the members for chiming in with what works (and what doesn't)!

hmscott
06-11-2014, 04:20 AM
The memory modules that came stock with my ASUS G750JM were 2 x 4Gb sticks of Hyundai (Hynix) DDR3L 1.35V CL11, part number of HMT451S6AFR8A-PB. At this point I was just happy to find actual memory sticks with the proper matching specifications as the original memory in the machine. I have not run a memory stress test on it. What do you recommend?

Note that this is after I initially bought (and then returned unopened) 2 x 8 Gb sticks of Corsair Vengeance 1.5V memory from the Best Buy sales guy that heartily recommended it as good memory for my G750. To be fair, he had no idea about the 1.35V requirement, nor did anybody else in their Geek squad department (one of whom also owned a G750M and had the Corsair 1.5V memory installed). I sent them the link to this thread. I had no idea about the 1.35V requirement either until I saw this sticky thread while I was trying to learn how to use ASUS Backtracker to move my original OS to a new SSD. If I hadn't seen it, I am sure I would be sitting here right now with that Corsair 1.5V memory crammed in to my sockets and sadly ignorant of the potential problems forthcoming. So, this thread really saved the day for me, thanks to ASUS for posting and the members for chiming in with what works (and what doesn't)!

The 4GB HMT451S6AFR8A-PB has an 8GB sibling HMT41GS6AFR8A-PB in same family, see Datasheet page 3 here:
http://html.alldatasheet.net/html-pdf/533756/HYNIX/HMT451S6AFR8A-PB/489/3/HMT451S6AFR8A-PB.html

When you google the 8GB HMT41GS6AFR8A-PB you will find it costs more, but that is likely because it is a 1.28v device rather than a 1.35v device, so it is a more expensive part.

When you look at CPU-Z / hwinfo64, what voltage readings do the 4 parts show? 1.28v and 1.35v, or only 1.35v? Not sure if they all run at the same voltage, or different for each socket.

There are a few memory benchmarks that you can use to find memory stability problems, the main issue is you want one that will use all available memory and keep it busy, rather than working the heck out of a smaller amount of memory - like most benchmarks.

And, it depends on if you want to get serious about the memory test, and run it booted on a CD/DVD or USB flash drive independent from Windows.

The go to test I use for work is memtest86+, but I usually run it from the BIOS, pxeboot'd, or as a bootable USB drive, or going back further a bootable CD/DVD. But, it is pretty geeky.

http://www.memtest.org/

Usually I can find memory failures when just running a few benchmarks, like Sandra, AIDA64, or prime95 - but the memory test is a side test, not the main goal. prime95 is good to run, but only tests around 8GB.

prime95 - use "blend" 8 threads default, good for testing up to 8GB, running multiple copies gives potential to test more memory, but not easy.

Most people want a Windows based, user friendly memory test, although in actuality if you are thinking there is a memory problem, you really don't want to boot Windows and have the memory test trigger a failure that causes a Windows crash that can corrupt the Windows install :)

But, here is JAM Heavy Load that runs under Windows, and I am editing this as it is running, allocated around 17GB of the 32GB I have installed, so it is going to take a while to run. Be sure and uncheck the CPU/GPU test, and only select the memory allocation option.

JAM Heavy Load
https://www.jam-software.de/customers/downloadTrial.php?article_no=402&language=EN&PHPSESSID=1tel14s958a3gbk6q601ab6164

37520

hmscott
06-11-2014, 05:12 AM
Razorback92a, it took a while, but the JAM HeavyLoad memory test allocated all 32GB.

Did you run memory diagnostics on your new memory?

37521

SupaFaztG
06-12-2014, 09:29 PM
SupaFaztG, please post the snippet of CPU-Z showing the part number for both of the SODIMM's you have installed, the SPD tab.

You do take a risk when buying pulls from computers, used memory is a gamble, but going by Ebay rating, it looks like he stands by his sales, so if you run into a problem you can return or swap them - make sure you check them out as soon as you get them :)

Hello hmscott,

I finally figured out how to take the screenshots with my new machine in Win8 using the Snipping Tool and also finally getting a really nice USB 3.0 flash drive, as you suggested, for my Backtracker image.

I bought the Sandisk Extreme USB 3.0 16GB. 190 MB/s Read, and 55 MB/s Write.

http://www.amazon.com/gp/product/B00DZPUOTE/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1

And Wow! 6 days ago I bought it for $22.95 INCL. S&H...NOW it's priced at $29.99 PLUS $4.49 S&H! Happy I got mine for $11.53 LESS! Glad I bought mine when I did! :o It only took 20 min. to create the image on the USB 3.0 stick, so thanks again for the advice on that!

Anyhow, here are my screenshots using CPU-Z for my RAM...

37557
3755837559

So that one seller selling used RAM is out on this.

Do you have any suggestions for me at this point?

I hope I did this correctly.

Thanks!

P.S. I am also going to post about my Backtracker experience here in the other thread. So far I created the image but have a few questions about the other features in Backtracker and should I use them, etc...Thanks again for helping me! :D

hmscott
06-13-2014, 03:10 AM
Hello hmscott,
I finally figured out how to take the screenshots with my new machine in Win8 using the Snipping Tool and also finally getting a really nice USB 3.0 flash drive, as you suggested, for my Backtracker image.
I bought the Sandisk Extreme USB 3.0 16GB. 190 MB/s Read, and 55 MB/s Write.
http://www.amazon.com/gp/product/B00DZPUOTE/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1
And Wow! 6 days ago I bought it for $22.95 INCL. S&H...NOW it's priced at $29.99 PLUS $4.49 S&H! Happy I got mine for $11.53 LESS! Glad I bought mine when I did! :o It only took 20 min. to create the image on the USB 3.0 stick, so thanks again for the advice on that!
Anyhow, here are my screenshots using CPU-Z for my RAM...
...
So that one seller selling used RAM is out on this.
Do you have any suggestions for me at this point?
I hope I did this correctly.
Thanks!
P.S. I am also going to post about my Backtracker experience here in the other thread. So far I created the image but have a few questions about the other features in Backtracker and should I use them, etc...Thanks again for helping me! :D

SupaFaztG, looks good :)

Answered in your other thread too.

Imagine if that 20 minutes at 55MB/sec write was done on a USB 2.0 drive at 5MB/sec write, 220 minutes!

Have fun :)

SupaFaztG
06-13-2014, 04:17 PM
SupaFaztG, looks good :)

Answered in your other thread too.

Imagine if that 20 minutes at 55MB/sec write was done on a USB 2.0 drive at 5MB/sec write, 220 minutes!

Have fun :)

Right?! LOL Great advice getting that faster flash drive.

Probably just order from one of the Honk Kong sellers on e-bay selling new.

Heading over to the other thread now.

Thanks man!

Dr4g0n36
06-13-2014, 04:51 PM
I finally figured out how to take the screenshots with my new machine in Win8 using the Snipping Tool and also finally getting a really nice USB 3.0 flash drive, as you suggested, for my Backtracker image.

You can also use the "old" method with stamp/print button for the entire desktop, or ALT+stamp/print button for the automatic crop of the active window :D


P.S. I am also going to post about my Backtracker experience here in the other thread. So far I created the image but have a few questions about the other features in Backtracker and should I use them, etc...Thanks again for helping me!

Maybe i could help you, wich question?

bravorauch
06-15-2014, 09:42 PM
Hello everybody,

Its time for upgrading my lap top (Asus RoG g750jx t4147h) and i am in a problem.
Actually i am planing to buy more RAM Memory but...
My lap top have 8GB (2x4) 1600 Mhz, and i have two more slots. I heard that mine Ram work on 1.35V, and i was just about to order Corsair Vengeance 8gb (2x4) but i saw its working on 1.5v and i belive that can be a problem so i am aksing here for advice.
Also when we resolve my first question i would like to know if i buy 8x8 gb and then i ll have original factory 2x4gb + 2x8gb that would work ?
Thanks a lot for advices
I must say i am not some comp expert i just want machine which is working without problems realy corecct and fast and i had money for this lap top :) . But i would like to buy more memory but dont know the best combination and way to do it.
Ofcourse i know to mount them in lap top, but i dont know to chose right one to fit and cooperate with factory ones.

If u can just write me full name of memory which is compatble with original ones (i think its samsung 1.35v dual sdmm 1600 2x4gb)
Best regards
Alex

hmscott
06-15-2014, 11:32 PM
Hello everybody,

Its time for upgrading my lap top (Asus RoG g750jx t4147h) and i am in a problem.
Actually i am planing to buy more RAM Memory but...
My lap top have 8GB (2x4) 1600 Mhz, and i have two more slots. I heard that mine Ram work on 1.35V, and i was just about to order Corsair Vengeance 8gb (2x4) but i saw its working on 1.5v and i belive that can be a problem so i am aksing here for advice.
Also when we resolve my first question i would like to know if i buy 8x8 gb and then i ll have original factory 2x4gb + 2x8gb that would work ?
Thanks a lot for advices
I must say i am not some comp expert i just want machine which is working without problems realy corecct and fast and i had money for this lap top :) . But i would like to buy more memory but dont know the best combination and way to do it.
Ofcourse i know to mount them in lap top, but i dont know to chose right one to fit and cooperate with factory ones.

If u can just write me full name of memory which is compatble with original ones (i think its samsung 1.35v dual sdmm 1600 2x4gb)
Best regards
Alex

Alex, the safest upgrade is to use a program like CPU-Z, hwinfo64, etc to read the make/model number of the memory installed - some G750's come with Hynix, Samsung, Hitachi, etc memory, you have to look at what you actually have.

Then use that 4GB model part number to google search for the 8GB member of the same product family, that 8GB part will be compatible with the 4GB parts already installed.

You can google search for that 8GB part number, and find places to purchase it - you won't find it at Best Buy, or Target, or Frys, as it is likely the newest 1.28v memory, and that isn't widely shipping yet.

I bought my 8GB Hynix memory from ebay, and it is an exact match for the other 3 x 8GB Hynix in my G750JH. Now they are all 1.28v memory, and run very fast.

My benchmarks are close to someone that just put in 2133mhz memory, so yes it is fast enough :)
http://rog.asus.com/rog-pro/realbench-v2-leaderboard/?Laptop=notebook&CPU=all&gpu=all&Core=all&view=1

The ROG realbench test is sensitive to memory speed, and I am in 2nd place, just a little slower than someone with 2133mhz 1.35v SODIMMs.

The 1.28v SODIMM's that come in the G750 are the lowest wattage memory available. We aren't going to do better by trying to find compatible 1.35v memory... it is best to find the same 1.28v make/model, and add them.

If you post the make and model number here for what you have installed we can help you find the right part to order..

bravorauch
06-16-2014, 03:23 PM
37785
Alex, the safest upgrade is to use a program like CPU-Z, hwinfo64, etc to read the make/model number of the memory installed - some G750's come with Hynix, Samsung, Hitachi, etc memory, you have to look at what you actually have.

Then use that 4GB model part number to google search for the 8GB member of the same product family, that 8GB part will be compatible with the 4GB parts already installed.

You can google search for that 8GB part number, and find places to purchase it - you won't find it at Best Buy, or Target, or Frys, as it is likely the newest 1.28v memory, and that isn't widely shipping yet.

I bought my 8GB Hynix memory from ebay, and it is an exact match for the other 3 x 8GB Hynix in my G750JH. Now they are all 1.28v memory, and run very fast.

My benchmarks are close to someone that just put in 2133mhz memory, so yes it is fast enough :)
http://rog.asus.com/rog-pro/realbench-v2-leaderboard/?Laptop=notebook&CPU=all&gpu=all&Core=all&view=1

The ROG realbench test is sensitive to memory speed, and I am in 2nd place, just a little slower than someone with 2133mhz 1.35v SODIMMs.

The 1.28v SODIMM's that come in the G750 are the lowest wattage memory available. We aren't going to do better by trying to find compatible 1.35v memory... it is best to find the same 1.28v make/model, and add them.

If you post the make and model number here for what you have installed we can help you find the right part to order..

37784

Okej here is a screen shot from Cpu-z i hope it ll give you some answers. I am very sure that i have samsung 2x4gb dual channel 800mhzx2, i saw that when i open cover underneath of laptop to mount one more hard drive i saw samsung memory underneath of keybord.
I would like to skip solution to change and put all 4 new memories cause of warranty.
So far this is what i know, if its not enought to decide exatcly which memory fit and cooperate whit my factory ones, please ask tell me more what to write so we will come to solution.
For me its not immportant total size of memory, its important to be total more than 8 gb and new instaled memory to work without any issues with original factory memories.

Thanks a lot
Sincerly Alex

I just notised one problem i guess its somthing wrong, now while i was writting this post i had google chrome and anti virus scanning running and nothing more and the i runned piriform speccy and look temperature which i got. I am sitting outside where is now 16 degreese.
Anyone know why its so high ??
37786

hmscott
06-16-2014, 08:39 PM
Okej here is a screen shot from Cpu-z i hope it ll give you some answers. I am very sure that i have samsung 2x4gb dual channel 800mhzx2, i saw that when i open cover underneath of laptop to mount one more hard drive i saw samsung memory underneath of keybord.
I would like to skip solution to change and put all 4 new memories cause of warranty.
So far this is what i know, if its not enought to decide exatcly which memory fit and cooperate whit my factory ones, please ask tell me more what to write so we will come to solution.
For me its not immportant total size of memory, its important to be total more than 8 gb and new instaled memory to work without any issues with original factory memories.
Thanks a lot
Sincerly Alex
I just notised one problem i guess its somthing wrong, now while i was writting this post i had google chrome and anti virus scanning running and nothing more and the i runned piriform speccy and look temperature which i got. I am sitting outside where is now 16 degreese.
Anyone know why its so high ??


Alex, you gave us all but what we needed, the model/part number :)

CPU-Z, the SPD tab, has the make and model/part number, like this:

37791

If it only says Samsung, and no part number, then you will need to pull off the bottom access panel, and write them down. Use the one in the SPD image above, get all the letters/numbers dash numbers/letters. Then google it.

Speccy is buggy, although the temps are likely correct, the memory speed isn't. Try using hwinfo64 - sensors only mode - that will track current / high / low temps, wattage usage, thermal throttling, and can log if needed. Give it a try :)

Hot is a relative term, 81c isn't cool, but 100c is the max, and the CPU will thermal throttle somewhere over 93c to protect itself, you should be fine.

Even a virus scan and browsing can load up the CPU with work, so watch the CPU speed / utilization if you want to get an idea of load vs temp.

Intel XTU has graphs and meters for monitoring, and can let you run stress tests to get an idea of load vs temp, and watch for thermal throttling too. I run hwinfo64 alongside XTU as it keeps high/low so if I miss the reading it keeps a column over the time it runs that says Yes if thermal throttling is reached. XTU doesn't.

It's hard to read the numbers / details when you screenshot the whole page and don't cut/crop it with mspaint before posting. Easier and faster is Windows snipping tool, search for snipp

marvy
06-17-2014, 02:05 AM
Picked up 2 of these from ecost/macmall HP Smart Buy 8GB DDR3L-1600 1.35V SODIMM - H6Y77UT#ABA and they are memtest-ing fine on my G750JW for a total of 24GB RAM.

hmscott
06-17-2014, 04:31 AM
Picked up 2 of these from ecost/macmall HP Smart Buy 8GB DDR3L-1600 1.35V SODIMM - H6Y77UT#ABA and they are memtest-ing fine on my G750JW for a total of 24GB RAM.

marvy, that's great, $52.99 each on sale too :)
http://www.macmall.com/p/HP-DIMM-Memory/product~dpno~9772621~pdp.idiicja

What is the make/part number of the memory that came installed in the G750, so we know which OEM memory is compatible?

bravorauch
06-17-2014, 04:06 PM
marvy, that's great, $52.99 each on sale too :)
http://www.macmall.com/p/HP-DIMM-Memory/product~dpno~9772621~pdp.idiicja

What is the make/part number of the memory that came installed in the G750, so we know which OEM memory is compatible?

Thanks guys for putting so much energy, its seems so complicate :D lol.
But i wont give up. Temperature was only that moment so high ( maybe some bug in program), i was waching 20 more times even with more open programs and it goes up to 80 degreese so i think its notnigh special...

But memory makes me problem, so slot 1 and 3 it show emptry, but 2 and 4 show exatcly what you ask for.
Here is a photos. For me its would be great to have as much as possible more memory but i would be satisfacted with 16 in total also ( 24 even better ).
Like i said i am not expert so i am asking from you to help me with chosing a right memory, you write me what is compatabil with original memory and then next step is to find saler in Sweden or worldwide.

King Regards
Alex
3787137872
3787337874

hmscott
06-18-2014, 01:31 AM
Thanks guys for putting so much energy, its seems so complicate :D lol.
But i wont give up. Temperature was only that moment so high ( maybe some bug in program), i was waching 20 more times even with more open programs and it goes up to 80 degreese so i think its notnigh special...

But memory makes me problem, so slot 1 and 3 it show emptry, but 2 and 4 show exatcly what you ask for.
Here is a photos. For me its would be great to have as much as possible more memory but i would be satisfacted with 16 in total also ( 24 even better ).
Like i said i am not expert so i am asking from you to help me with chosing a right memory, you write me what is compatabil with original memory and then next step is to find saler in Sweden or worldwide.
King Regards
Alex

Alex, never too late to learn :)

Start here with these videos on how to use Windows 8.x snipping tool, that way you don't have to share your whole personal desktop to share a small dialog.

http://www.youtube.com/results?search_query=how+to+use+snipping+tool+in+w indows+8

Alex, it is actually very simple - but this one is a bit complex :)

By finding the complimentary 8GB model to your Samsung M471B5173BH0-YK0 4GB memory, you are avoiding testing compatibility with unknown memory that has the "same" specs - they are never the same, even between some manufacturer model families with the same specs you can get incompatibilities.

You aren't saving $ when you buy cheap parts... you are paying more through uncertainty. You can get the right part at close to the lowest price by frugal shopping, and patience.

The method is to do a google search on Samsung M471B5173BH0-YK0, what you have installed, and add 8GB - what you want - to the search:

...skipping lots of stuff...

It turns out that it was tough to find this one, as the -YK0 option is so new, and the base number is so old - and shared between DIMM/SODIMM/etc parts, that it was hard to dig out what we are looking for, but I found it :)

Here is the PDF for M471B5173BH0-YK0 M471B1G73BH0-YK0 1.35v 4GB/8GB
http://www.samsung.com/global/business/semiconductor/file/product/ds_ddr3_4gb_b-die_based_1_35v_sodimm_rev151-1.pdf

Now we do a google search to find somewhere to purchase the M471B1G73BH0-YK0 8GB part:

https://www.google.com/search?num=50&safe=off&client=firefox-a&hs=6nl&rls=org.mozilla%3Aen-US%3Aofficial&channel=sb&q=M471B1G73BH0-YK0&oq=M471B1G73BH0-YK0&gs_l=serp.12..0j0i5i30.11068.11240.0.13167.2.2.0.0 .0.0.94.165.2.2.0....0...1c.1.47.serp..0.2.164.dQA tsStvGpI

Prices range from $80-125 for new parts, so shop well :)

You can get refurb memory cheaper, and I have had good luck doing that personally, as it is burned in and tested multiple times - I have received bad new and refurb parts, so either way you will need to test what you get :)

bravorauch
06-18-2014, 03:38 PM
Alex, never too late to learn :)

Start here with these videos on how to use Windows 8.x snipping tool, that way you don't have to share your whole personal desktop to share a small dialog.

http://www.youtube.com/results?search_query=how+to+use+snipping+tool+in+w indows+8

Alex, it is actually very simple - but this one is a bit complex :)

By finding the complimentary 8GB model to your Samsung M471B5173BH0-YK0 4GB memory, you are avoiding testing compatibility with unknown memory that has the "same" specs - they are never the same, even between some manufacturer model families with the same specs you can get incompatibilities.

You aren't saving $ when you buy cheap parts... you are paying more through uncertainty. You can get the right part at close to the lowest price by frugal shopping, and patience.

The method is to do a google search on Samsung M471B5173BH0-YK0, what you have installed, and add 8GB - what you want - to the search:

...skipping lots of stuff...

It turns out that it was tough to find this one, as the -YK0 option is so new, and the base number is so old - and shared between DIMM/SODIMM/etc parts, that it was hard to dig out what we are looking for, but I found it :)

Here is the PDF for M471B5173BH0-YK0 M471B1G73BH0-YK0 1.35v 4GB/8GB
http://www.samsung.com/global/business/semiconductor/file/product/ds_ddr3_4gb_b-die_based_1_35v_sodimm_rev151-1.pdf

Now we do a google search to find somewhere to purchase the M471B1G73BH0-YK0 8GB part:

https://www.google.com/search?num=50&safe=off&client=firefox-a&hs=6nl&rls=org.mozilla%3Aen-US%3Aofficial&channel=sb&q=M471B1G73BH0-YK0&oq=M471B1G73BH0-YK0&gs_l=serp.12..0j0i5i30.11068.11240.0.13167.2.2.0.0 .0.0.94.165.2.2.0....0...1c.1.47.serp..0.2.164.dQA tsStvGpI

Prices range from $80-125 for new parts, so shop well :)

You can get refurb memory cheaper, and I have had good luck doing that personally, as it is burned in and tested multiple times - I have received bad new and refurb parts, so either way you will need to test what you get :)

Yep its never late to learn some new staffs. You know couple of years ago i was well informed and with good knolege about IT and Computers, but then life kick me on completly different staffs so i lost step with developing, thats why i am like a stranger :D.
I will study this windows snipp for sure, thanks for tips.
HUGE THANK YOU for all. I found there on amazon and on ebay same memory, but again i have questions.. There is for sale same specification same memory model as mine, but its 1x8 gb and i have 2x4gb. Isnt it better to but 2x4gb so they ll be in pair, and so far i know they are dual chanell so my instikt tell me that it should be additional 2x4gb as originaly ones.
Second question is when i get parts from ebay or amazon, in this case memory, and it turn that memory is burned like you say, how i can notise that ? It mean that is out of function 100% or i need to do some more sophisticated tests ? And in that case do i get new one buy sending back that one which is damaged ?
Best Regards
Alex

I just toke a photo of my memory, i could see only one underneath laptop.
I guesse i suppose to search on amazon or e bay exactly in letter same memory ?
37911

hmscott
06-19-2014, 01:19 AM
...HUGE THANK YOU for all. I found there on amazon and on ebay same memory, but again i have questions.. There is for sale same specification same memory model as mine, but its 1x8 gb and i have 2x4gb. Isnt it better to but 2x4gb so they ll be in pair, and so far i know they are dual chanell so my instikt tell me that it should be additional 2x4gb as originaly ones.
Second question is when i get parts from ebay or amazon, in this case memory, and it turn that memory is burned like you say, how i can notise that ? It mean that is out of function 100% or i need to do some more sophisticated tests ? And in that case do i get new one buy sending back that one which is damaged ?
Best Regards
Alex

Alex, you have 2 x 4GB, with 2 slots free. The 4 slots will accept 4 x 8GB for a total of 32GB. If you want to get the most out of the 2 slots remaining, you should get 8GB SODIMM's, and not 4GB SODIMM's.

Adding 1 x 8GB at a time will be ok. That way you can spread the cost out over 2 purchases.

If you get 2 x 4GB and fill up the slots, you would need to remove the 4GB SODIMM's later to replace with 8GB SODIMM's to add more memory, so it makes sense to do it with 8GB SODIMM's to start. :)

Either way works, and if you only want 16GB of memory, instead of 12GB (adding 1 x 8GB) and then (adding 2 x 8GB) 24GB, you could only put in 2 x 4GB more and stay at 16GB :)

M471B5173BH0-YK0 4GB
M471B1G73BH0-YK0 8GB

Let us know what you end up installing, and how it works out :)

bravorauch
06-19-2014, 03:07 PM
Alex, you have 2 x 4GB, with 2 slots free. The 4 slots will accept 4 x 8GB for a total of 32GB. If you want to get the most out of the 2 slots remaining, you should get 8GB SODIMM's, and not 4GB SODIMM's.

Adding 1 x 8GB at a time will be ok. That way you can spread the cost out over 2 purchases.

If you get 2 x 4GB and fill up the slots, you would need to remove the 4GB SODIMM's later to replace with 8GB SODIMM's to add more memory, so it makes sense to do it with 8GB SODIMM's to start. :)

Either way works, and if you only want 16GB of memory, instead of 12GB (adding 1 x 8GB) and then (adding 2 x 8GB) 24GB, you could only put in 2 x 4GB more and stay at 16GB :)

M471B5173BH0-YK0 4GB
M471B1G73BH0-YK0 8GB

Let us know what you end up installing, and how it works out :)
Scott,

I am still searching on ebay, amazon which ones i should buy.
But if i decide latter to buy all 4 new 4x8gb total 32gb ( or maybe now and void warranty ) what kind of memory i should search for medium high quality ?

hmscott
06-19-2014, 10:19 PM
Scott,

I am still searching on ebay, amazon which ones i should buy.
But if i decide latter to buy all 4 new 4x8gb total 32gb ( or maybe now and void warranty ) what kind of memory i should search for medium high quality ?

bravorauch, if you want to go through all the trouble to pull apart the screen/top to get at the 2 SODIMM sockets under the keyboard, you might as well go for the best you can find.

2133mhz memory has been posted as working, and it makes a measurable difference in benchmarks - I doubt you will notice in interactive apps, but for processing lots of batch jobs that would benefit could reward you by shorter runtime's.

G750 Haswell Boards Support 2133MHz SODIMM's
http://rog.asus.com/forum/showthread.php?47957-G750-Haswell-Boards-Support-2133MHz-SODIMM-s&p=406625&viewfull=1#post406625

And, earlier 1866mhz memory:
http://rog.asus.com/forum/showthread.php?33744-Upgraders-1.35V-memory-is-required!&p=316319&viewfull=1#post316319

Make sure you get SPD 1.35v or 1.28v memory.

Be careful, Corsair has been labeling SPD 1.5 memory as DDR3L "tested at 1.35v", and the G750 runs it at 1.5v - if the BIOS let us force memory values we could use it, but the G750 goes by the SPD value.

bravorauch
06-23-2014, 06:14 PM
bravorauch, if you want to go through all the trouble to pull apart the screen/top to get at the 2 SODIMM sockets under the keyboard, you might as well go for the best you can find.

2133mhz memory has been posted as working, and it makes a measurable difference in benchmarks - I doubt you will notice in interactive apps, but for processing lots of batch jobs that would benefit could reward you by shorter runtime's.

G750 Haswell Boards Support 2133MHz SODIMM's
http://rog.asus.com/forum/showthread.php?47957-G750-Haswell-Boards-Support-2133MHz-SODIMM-s&p=406625&viewfull=1#post406625

And, earlier 1866mhz memory:
http://rog.asus.com/forum/showthread.php?33744-Upgraders-1.35V-memory-is-required!&p=316319&viewfull=1#post316319

Make sure you get SPD 1.35v or 1.28v memory.

Be careful, Corsair has been labeling SPD 1.5 memory as DDR3L "tested at 1.35v", and the G750 runs it at 1.5v - if the BIOS let us force memory values we could use it, but the G750 goes by the SPD value.

Hello,

I have ordered 2x4gb Samsung ( same like my original ones) but a bit older manufactered date. I am waiting to arrive to my home´. So i gave up to replace and put all 4 new, maybe latter in the future.
I am comming back soon with new informations.
Just i thing i order asus nomad bag and i must say that is top quality for a bit more money but i think it worth that cash, i am satisfacted.

Regards

hmscott
06-24-2014, 03:30 AM
Hello,
I have ordered 2x4gb Samsung ( same like my original ones) but a bit older manufactured date. I am waiting to arrive to my home´. So i gave up to replace and put all 4 new, maybe latter in the future.
I am coming back soon with new information.
Just i thing i order asus nomad bag and i must say that is top quality for a bit more money but i think it worth that cash, i am satisfied.
Regards

bravorauch, sounds good :)

Did you order new or refurbished memory? 16GB will likely be plenty, you can disable the pagefile, hibernation, and gain back 32GB of C: partition space :)

Dario723
07-02-2014, 02:34 PM
...very useful thread and great forum, just bought G750JW, did SSD upgrade (840 EVO) and ordered this two RAM modules, hopefully these will be fine http://www.amazon.com/Hynix-HMT451S6AFR8A-PB-PC3-12800-DDR3-1600MHz-Unbuffered/dp/B00FKEZ218/ref=sr_1_1?ie=UTF8&qid=1404312023&sr=8-1&keywords=HMT451S6AFR8A

hmscott
07-02-2014, 09:13 PM
...very useful thread and great forum, just bought G750JW, did SSD upgrade (840 EVO) and ordered this two RAM modules, hopefully these will be fine http://www.amazon.com/Hynix-HMT451S6AFR8A-PB-PC3-12800-DDR3-1600MHz-Unbuffered/dp/B00FKEZ218/ref=sr_1_1?ie=UTF8&qid=1404312023&sr=8-1&keywords=HMT451S6AFR8A

Dario723, those look good - I assume you got the part number from what you already have installed in your G750JW? If you have 2 x 4GB of those already, that makes a very useful 16GB.

Let us know how they work out for you :)

Dario723
07-03-2014, 03:15 AM
...your assumption is right:-), just corrected color based on icn profiles posted here, also increased refresh rate to 85Hz on my Chi Mei now my G750JW is in mint condition.., unfortunately had to downgrade Nvidia drivers (311.93) to solve auto dim when on battery... love this forum

hmscott
07-03-2014, 09:28 AM
...your assumption is right:-), just corrected color based on icn profiles posted here, also increased refresh rate to 85Hz on my Chi Mei now my G750JW is in mint condition.., unfortunately had to downgrade Nvidia drivers (311.93) to solve auto dim when on battery... love this forum

Dario723, did you try 100hz on the Chi Mei? Works for most everyone I have heard try it, including me... 105hz doesn't work, but 100hz does :)

The auto contrast problem is annoying, and it is currently unknown why most don't have it, but some do. I don't have the problem on the JH, nor on the JX/JW.

I have done many Asus Backtracker restores, and reinstalled lots of stuff every time and never seen the auto contrast issue.

You might try making an Asus Backtracker flash recovery drive, if you haven't already, and do a complete recovery restore. And then watch carefully as you install / configure to find the exact install/change that causes it. Assuming it is a software problem, and not a slight difference in hardware.

Enjoy :)

bravorauch
07-06-2014, 07:05 PM
bravorauch, sounds good :)

Did you order new or refurbished memory? 16GB will likely be plenty, you can disable the pagefile, hibernation, and gain back 32GB of C: partition space :)

Hello Scott,

I couldent find new ones ( upgrade kit 2x4gb ) they was selling only one 4gb, so would be forced to order on two different places and that would cost me time. But now it ll cost me even more i belive :/.
Memories are in my lap top now, so lap top see 16 gb, but first day when i instal them lap top shuted down without reason after 20 minutes of usage, when i try to turn on again nothing happend i tryed several times nothing happend, then i plug them out and computer start same second. Then i left like that ( i didnt have time to test more ). Now, right now before i start computer i instal them again and start lap top and i am using now around 20 minutes and it still running normaly.
Any idea what is the problem ? Maybe some test to do to dicover problem ? Or some settings ?

And can you explain me a bit better or more amater way lol your previous post about 32 gb more space on C partition ?

Thanks a lot

Regards Alex

I forgot one more think, i feel that when i star up computer it need much more time to start windows wit these two additional memories its kind a wird.

hmscott
07-06-2014, 10:01 PM
Hello Scott,

I couldent find new ones ( upgrade kit 2x4gb ) they was selling only one 4gb, so would be forced to order on two different places and that would cost me time. But now it ll cost me even more i belive :/.
Memories are in my lap top now, so lap top see 16 gb, but first day when i instal them lap top shuted down without reason after 20 minutes of usage, when i try to turn on again nothing happend i tryed several times nothing happend, then i plug them out and computer start same second. Then i left like that ( i didnt have time to test more ). Now, right now before i start computer i instal them again and start lap top and i am using now around 20 minutes and it still running normaly.
Any idea what is the problem ? Maybe some test to do to dicover problem ? Or some settings ?

And can you explain me a bit better or more amater way lol your previous post about 32 gb more space on C partition ?

Thanks a lot

Regards Alex

I forgot one more think, i feel that when i star up computer it need much more time to start windows wit these two additional memories its kind a wird.

bravorauch, so if I follow your description. You have refurbished memory, 16GB total, and the first time it was installed you crashed after 20 minutes. And, you re-seated the memory and it stays running, but you think it isn't working well - takes too long to reboot/start up?

If the memory was working correctly it wouldn't be running slower, and it wouldn't have crashed after 20 minutes, so you should return the memory, and request another set.

You could test running on 1 of the refurbished 4GB SODIMM's at a time to see if one of them are stable, then you would return 1 of them and wait for a replacement for it. It is up to you, and how much time you have left in the return window allowed by the seller.

Lets wait on the partition description until after you get memory that is working well for you.

Look again for new memory, the vendors get new stock to sell all the time, so keep looking :)

bravorauch
07-07-2014, 04:51 PM
bravorauch, so if I follow your description. You have refurbished memory, 16GB total, and the first time it was installed you crashed after 20 minutes. And, you re-seated the memory and it stays running, but you think it isn't working well - takes too long to reboot/start up?

If the memory was working correctly it wouldn't be running slower, and it wouldn't have crashed after 20 minutes, so you should return the memory, and request another set.

You could test running on 1 of the refurbished 4GB SODIMM's at a time to see if one of them are stable, then you would return 1 of them and wait for a replacement for it. It is up to you, and how much time you have left in the return window allowed by the seller.

Lets wait on the partition description until after you get memory that is working well for you.

Look again for new memory, the vendors get new stock to sell all the time, so keep looking :)

Hello Scott,

Yes thats right, i have 2x4 gb orignal, and i have from e bay now 2x4 gb additional. And only first day it crached after 20 minutes, and i toke them out and i didnt use computer for a while didnt have time, so yesterday and today i have used a bit and no crashing or shuting down yet. Only first day. I am not sure if reebot system slower, maybe i imagine that after crashing...
Unfortinately i dont have time to return this memory, cause in 2 days i am leaving Sweden and i will be on vocation for 1 mounth. So if this memory start again to make problems i will put them out from computer and after i come back home i will search to buy new ones. And this is first and LAST time that i bought second hand eletronic parts.
I try to run 3 games and 2 work without issue, but Batman Arkham its a bit in slow motion, but i think that people on intenet compained about that game that is run somethimes in slow motion...
So far it crashed only ones and not after and this lap top never crashed before i put these memories..

hmscott
07-07-2014, 05:29 PM
Hello Scott,
Yes thats right, i have 2x4 gb orignal, and i have from e bay now 2x4 gb additional. And only first day it crached after 20 minutes, and i toke them out and i didnt use computer for a while didnt have time, so yesterday and today i have used a bit and no crashing or shuting down yet. Only first day. I am not sure if reebot system slower, maybe i imagine that after crashing...
Unfortinately i dont have time to return this memory, cause in 2 days i am leaving Sweden and i will be on vocation for 1 mounth. So if this memory start again to make problems i will put them out from computer and after i come back home i will search to buy new ones. And this is first and LAST time that i bought second hand eletronic parts.
I try to run 3 games and 2 work without issue, but Batman Arkham its a bit in slow motion, but i think that people on intenet compained about that game that is run somethimes in slow motion...
So far it crashed only ones and not after and this lap top never crashed before i put these memories..

bravorauch, well it could have been coincidence that you crashed near to the time you changed the memory - it is Windows after all.

I bought used memory for my G750JH, to add a 4th 8GB SODIMM, and it works fine. As long as the vendor tests the memory - pulled memory actually has a higher success rate than new memory - as it has already burned in and gotten past the infant mortality failure point of new memory - and it doesn't wear out if run at rated specs and handled carefully. Used memory is usually a safe bet.

The human mind has an amazing capacity to notice differences, but not always so reliable on attributing cause and effect - you have to train yourself not to jump to conclusions before taking in all the variables - lets hope it is hyper sensitivity / awareness due to the crash - maybe when you come back from your trip.

Have a nice vacation :)

bravorauch
07-07-2014, 06:40 PM
bravorauch, well it could have been coincidence that you crashed near to the time you changed the memory - it is Windows after all.

I bought used memory for my G750JH, to add a 4th 8GB SODIMM, and it works fine. As long as the vendor tests the memory - pulled memory actually has a higher success rate than new memory - as it has already burned in and gotten past the infant mortality failure point of new memory - and it doesn't wear out if run at rated specs and handled carefully. Used memory is usually a safe bet.

The human mind has an amazing capacity to notice differences, but not always so reliable on attributing cause and effect - you have to train yourself not to jump to conclusions before taking in all the variables - lets hope it is hyper sensitivity / awareness due to the crash - maybe when you come back from your trip.

Have a nice vacation :)

Well Scott thanks a lot for many nice advices, i ll have nice vocation for sure lol :).

I wish you all the best and we keep in touch

Regards Alex

DISroqTeD
10-31-2014, 07:34 AM
Hello guys ..

I have a G750JZ - T4155D .. and I would like to upgrade my entire memory to Corsair Vengeance ( even the 16Gb already included ). The modules I would like to use are CMSX16GX3M2B1600C9 .. they say Tested 1.35v .. so my question is .. will it work? Can I buy them?

hmscott
10-31-2014, 09:06 PM
Hello guys ..

I have a G750JZ - T4155D .. and I would like to upgrade my entire memory to Corsair Vengeance ( even the 16Gb already included ). The modules I would like to use are CMSX16GX3M2B1600C9 .. they say Tested 1.35v .. so my question is .. will it work? Can I buy them?

DISroqTeD, smart to ask before ordering :)

No, they say "tested" because their SPD burned in to the SODIMM sets the voltage to 1.5v - and you have to have a BIOS option to force it to run at 1.35v, which the G750's don't - they only read the SPD and run that voltage - 1.5v.

The G.Skill memory is about the same cost as getting the normal speed memory at 1.35v, and runs at 1.35v from SPD - and they have been tested as working by a couple of people that have posted, so I would go with a matched set of G.Skill.

newegg has a 4 pack for full replacement - which is a matched set tested as a set, so that is the one to get if you intend to replace all 4.

G.SKILL Ripjaws 32GB (4 x 8G) 204-Pin DDR3 SO-DIMM DDR3L 2133 Laptop Memory Model F3-2133C11Q-32GRSL
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231776

If you need to do it in 2 stages, there are 2 packs too :)
G.SKILL Ripjaws Series 16GB (2 x 8G) 204-Pin DDR3 SO-DIMM DDR3 2133 Laptop Memory Model F3-2133C11D-16GRSL
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231760

The 4 pack costs $20 more than 2 2 packs, likely because the 4 pack is tested as a set in addition to as a pair.

Note that you likely need to remove all the existing memory before putting in any G.Skill 2133mhz memory.

Please come back and let us know how it works out :)

DISroqTeD
11-01-2014, 08:40 AM
Thank you for the fast reply Scott.

The thing is that I live in Romania and I have 2 options that now are like 50% down with the price due to extended Black Friday and stuff .. the other option that they have right now at a lower than normal price besides the Corsair is Kingston HX316LS9IBK2/16 or HX318LS10IBK2/16. The price is around 100 Euros / KIT. Buying cheaper memory would leave room in my wallet for 2 Kingston 3K 480Gb SSD`s as well.

hmscott
11-01-2014, 09:36 AM
Thank you for the fast reply Scott.

The thing is that I live in Romania and I have 2 options that now are like 50% down with the price due to extended Black Friday and stuff .. the other option that they have right now at a lower than normal price besides the Corsair is Kingston HyperX Impact ( HX318LS10IBK2/16 ) It`s 100 Euros / KIT. Buying cheaper memory would leave room in my wallet for 2 Hyperx 3K 480Gb SSD`s as well.

DISroqTeD, if you are going to replace all 4 SODIMM's then as long as the SPD is 1.35v you should be ok. Just make sure you can return it if it doesn't work, or there is a problem with 1 of the SODIMM's - note the return policy and return time - sometimes it is as low as 7 days, hopefully it is 15-30 days.

The SSD's sound good too.

Good luck, and let us know how it works out :)

SteelersFANinMA
11-01-2014, 07:04 PM
This is what I have for memory, 8GB (2x4GB) sk hynix HMT451S6AFR8A-PB. CPU-Z reports them running at 1.35v.

What do I need for an upgrade that will be compatible? Looking at 2x8 or 4x8 sticks. Thanks for any help.

hmscott
11-01-2014, 11:49 PM
This is what I have for memory, 8GB (2x4GB) sk hynix HMT451S6AFR8A-PB. CPU-Z reports them running at 1.35v.

What do I need for an upgrade that will be compatible? Looking at 2x8 or 4x8 sticks. Thanks for any help.

SteelersFANinMA, you gathered the correct info, the 4GB member of that Hynix family, then you just needed to google using that part number and find the family data sheet and spec pdf to get the 8GB family member part number.

https://www.skhynix.com/products/computing/view.jsp?info.ramKind=20&info.serialNo=HMT41GS6AFR8A

https://www.skhynix.com/inc/pdfDownload.jsp?path=/datasheet/pdf/module/ds_4Gb_DDR3L(A-ver)based_SODIMMs(Rev.0.1).pdf

You need to match the base name and model extension of the 4GB when picking the right 8GB part number

4GB - HMT451S6AFR8A-PB
8GB - HMT41GS6AFR8A-PB

You should be able to add 2 x 8GB HMT41GS6AFR8A-PB and leave the 2 x 4GB in place.

And, then you need to google for suppliers in your area, or at least ones you are familiar with and trust.

Please come back and let us know where you bought them and how they worked out :)

SteelersFANinMA
11-02-2014, 01:34 AM
SteelersFANinMA, you gathered the correct info, the 4GB member of that Hynix family, then you just needed to google using that part number and find the family data sheet and spec pdf to get the 8GB family member part number.

https://www.skhynix.com/products/computing/view.jsp?info.ramKind=20&info.serialNo=HMT41GS6AFR8A

https://www.skhynix.com/inc/pdfDownload.jsp?path=/datasheet/pdf/module/ds_4Gb_DDR3L(A-ver)based_SODIMMs(Rev.0.1).pdf

You need to match the base name and model extension of the 4GB when picking the right 8GB part number

4GB - HMT451S6AFR8A-PB
8GB - HMT41GS6AFR8A-PB

You should be able to add 2 x 8GB HMT41GS6AFR8A-PB and leave the 2 x 4GB in place.

And, then you need to google for suppliers in your area, or at least ones you are familiar with and trust.

Please come back and let us know where you bought them and how they worked out :)

Thank you hmscott for the reply. That sounds good. What about the 2133 G.Skill Ripjaws that someone mentioned worked in an earlier post? I'd like to get the most bang for my buck.

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231760

Will those work along with the originally supplied Hynix ram or is that more or less for a complete swap-out?

hmscott
11-02-2014, 03:28 AM
Thank you hmscott for the reply. That sounds good. What about the 2133 G.Skill Ripjaws that someone mentioned worked in an earlier post? I'd like to get the most bang for my buck.

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231760

Will those work along with the originally supplied Hynix ram or is that more or less for a complete swap-out?

SteelersFANinMA, the point of finding 8GB SODIMM's from the same family as those already installed is for compatibility. You can't expect to mix even same speed / timing SODIMM's from different make/model hope for compatibility.

Even more so is it unlikely that majorly different speed / make / size SODIMM's will be compatible - they won't.

If you want those awesome G.Skill 2133mhz SODIMM's you will need to remove all the other SODIMM's first. You might as well get a 4 pack of matched / tested SODIMM's and do all 4 at the same time.

It's a big enough pain to pull apart the whole laptop to get out / replace the 2 SODIMM's on the top of the laptop, you might as well do all 4 at once.

G.SKILL Ripjaws 32GB (4 x 8G) 204-Pin DDR3 SO-DIMM DDR3L 2133 Laptop Memory Model F3-2133C11Q-32GRSL
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231776

If you do end up replacing all 4, please take some photo's and upload the results here :)

SteelersFANinMA
11-02-2014, 06:08 PM
SteelersFANinMA, the point of finding 8GB SODIMM's from the same family as those already installed is for compatibility. You can't expect to mix even same speed / timing SODIMM's from different make/model hope for compatibility.

Even more so is it unlikely that majorly different speed / make / size SODIMM's will be compatible - they won't :)

If you want those awesome G.Skill 2133mhz SODIMM's you will need to remove all the other SODIMM's first. You might as well get a 4 pack of matched / tested SODIMM's and do all 4 at the same time.

It's a big enough pain to pull apart the whole laptop to get out / replace the 2 SODIMM's on the top of the laptop, you might as well do all 4 at once :)

G.SKILL Ripjaws 32GB (4 x 8G) 204-Pin DDR3 SO-DIMM DDR3L 2133 Laptop Memory Model F3-2133C11Q-32GRSL
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231776

If you do end up replacing all 4, please take some photo's and upload the results here :)



Thanks again for the reply. That's all the information I need to know. I was hoping to just add two sticks but I'm having trouble finding a pair of Hynix 8GB SODIMM's that are new. So, I may just go with the four G.Skill's. I'll report back as things progress.

neogenesis
11-09-2014, 05:40 AM
Hi to all, I have a G750JX & I upgraded my RAM with Kingston KVR16LS11/8 ( http://www.kingston.com/datasheets/KVR16LS11_8.pdf ) but after upgrading my RAM I got random BSOD [ irql_not_less_or_equal, driver_irql_not_less_or_equal, unexpected_kernel_momde_trap, system_service_exception ] before upgrading my RAM I didn't get any of this BSOD.

hmscott
11-09-2014, 09:31 AM
Hi to all, I have a G750JX & I upgraded my RAM with Kingston KVR16LS11/8 ( http://www.kingston.com/datasheets/KVR16LS11_8.pdf ) but after upgrading my RAM I got random BSOD [ irql_not_less_or_equal, driver_irql_not_less_or_equal, unexpected_kernel_momde_trap, system_service_exception ] before upgrading my RAM I didn't get any of this BSOD.

neogenesis, the memory already installed isn't compatible with the Kingston memory you bought, or one or both of the new Kingston SODIMM's are bad. Debug by removing 1 of the new Kingston SODIMM's and see if that works. If it still fails, swap the installed Kingston SODIMM for the removed one and test again. If it still fails, it is bad or incompatible. If 1 Kingston SODIMM works, then the other one is bad, and return it for a good one.

More than likely they are just incompatible. Even with the same outward specs it happens that different makes/models of memory aren't interchangeable.

Also, the spec sheet says it works with both 1.35v and 1.5v, and that is a bad sign - generally such descriptions mean that the SODIMM's were made for 1.5v, and the SPD values burned in to the SODIMM say it is 1.5v, and the G750 is going to read that SPD and set the voltage to 1.5v, which is bad.

These memories are tested at 1.35v, and if the G750 BIOS had memory tuning settings like many motherboards, you could set the voltage to 1.35v by hand - but it is still best to use memory of the correct vintage SPD setting.

The G750 doesn't have BIOS settings for memory tuning so you can't force the memory to run at 1.35v - so it is not compatible.

You can check this via a program like CPU-Z, click the SPD tab, and select each SODIMM socket and read the SPD - look at what it says, and if it says 1.5v, bingo - problem. It needs to say 1.35v or 1.28v (Hynix stock memory used by Asus)

CPU-Z ROG Customized download
http://www.cpuid.com/softwares/cpu-z.html

42940

The easiest way to put in the memory that is compatible is to read the make/model of what is installed, and find and purchase the same make/model - or if you want a higher density, like 8GB instead of 4GB - find the 8GB model from the same make/model family as the 4GB already installed.

If you want to put in faster memory than what is already installed, you need to replace all 4 SODIMM's - which means you need to remove the screen and left the top panel so you can remove the 2 top installed SODIMM's - then you can put in 2 or 4 of any 1.35v SPD memory

A favorite is to install 4 2133mhz G.skill memory, here are a couple of links for it at newegg.

G.SKILL Ripjaws 32GB (4 x 8G) 204-Pin DDR3 SO-DIMM DDR3L 2133 Laptop Memory Model F3-2133C11Q-32GRSL
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231776

G.SKILL Ripjaws Series 16GB (2 x 8G) 204-Pin DDR3 SO-DIMM DDR3 2133 Laptop Memory Model F3-2133C11D-16GRSL
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231760

If you find the name of the installed memory, we can help you find the 8GB version if that is what you need, let us know :)

neogenesis
11-09-2014, 12:58 PM
Hi hmscott,

I upgrade all my RAM from 16Gb to 32Gb so I replace all of them with new one.
I download the CPU-Z and it says 1.35v (please see attached file)

42947

All 4 modules are the same. Can you please advise me so I can bring the module back & replace it with new one. Thank you. I bought this RAM because as per Kingtons website G750JX is supported

http://www.kingston.com/en/memory/search/?partid=kvr16ls11/8
Click on "Show all systems that work with this memory" & check "G750JX"

hmscott
11-09-2014, 02:57 PM
Hi hmscott,

I upgrade all my RAM from 16Gb to 32Gb so I replace all of them with new one.
I download the CPU-Z and it says 1.35v (please see attached file)

All 4 modules are the same. Can you please advise me so I can bring the module back & replace it with new one. Thank you. I bought this RAM because as per Kingtons website G750JX is supported

http://www.kingston.com/en/memory/search/?partid=kvr16ls11/8
Click on "Show all systems that work with this memory" & check "G750JX"

neogenesis, aha, that additional info helps :)

Well, I guess in this case, the easiest first test to do is to pull the 2 SODIMM's from the bottom easy access panel, and boot on the 2 new SODIMM's you installed on the top, and run on those for a while.

Hopefully those 2 new SODIMM's on the top 2 slots are ok, as well you know it is tough to get at them.

If you are stable, Whew!, now you can pick one of the 2 other SODIMM's that you pulled from the bottom sockets, and put one back, and see if you are still stable, then - believe it or not - install the 4th SODIMM back to the open bottom socket - as just taking them in / out is sometimes enough to get the contacts to make better... contact.

If you aren't stable on the top 2 SODIMM's... you can swap the 2 bottom SODIMM's for the 2 top SODIMM's and test for stability - then if you are ok, which I really hope you are at this point - then take 1 of the remaining SODIMM's and install it in a bottom slot, and test for stability. Then you have the 1 bad SODIMM sitting outside the laptop.

Take that last SODIMM and install it in the available bottom slot, and hope that the uninstall/install make better contact and all 4 are now working stably.

If that last SODIMM causes instability again, you now know which SODIMM is bad... I hate to add this, but it is possible to have more than 1 bad SODIMM, and at least a couple of times I have run into a bad batch where all of the SODIMM's fail - as tested in a memory test station. It's rare, but it can happen.

That should find the bad SODIMM(s), please come back and let us know how it works out. :)

neogenesis
11-09-2014, 03:04 PM
Thanks for the info Scott, I'll keep you updated :)

hmscott
11-11-2014, 03:05 AM
I'm in the same boat as this guy. I have 8GB of ram in my G750JM and its 2*4. I checked the documents like you recommended and it was the same part number this guy had.

"Quote Originally Posted by SteelersFANinMA View Post
This is what I have for memory, 8GB (2x4GB) sk hynix HMT451S6AFR8A-PB. CPU-Z reports them running at 1.35v.

What do I need for an upgrade that will be compatible? Looking at 2x8 or 4x8 sticks. Thanks for any help.
SteelersFANinMA, you gathered the correct info, the 4GB member of that Hynix family, then you just needed to google using that part number and find the family data sheet and spec pdf to get the 8GB family member part number.

https://www.skhynix.com/products/com...=HMT41GS6AFR8A

https://www.skhynix.com/inc/pdfDownl...s(Rev.0.1).pdf

You need to match the base name and model extension of the 4GB when picking the right 8GB part number

4GB - HMT451S6AFR8A-PB
8GB - HMT41GS6AFR8A-PB

You should be able to add 2 x 8GB HMT41GS6AFR8A-PB and leave the 2 x 4GB in place.

And, then you need to google for suppliers in your area, or at least ones you are familiar with and trust.

Please come back and let us know where you bought them and how they worked out "


I ordered the 4GB version, specifically this one and my G750JM just booted to a blackscreen and I verified that it was the same exact ram. I returned the ram to amazon and i want to order again but I want to make sure the ram I order works this time. What do you recommend for upgrading to 12GB or 16 GB and making sure it works. Thanks and have a great day.

http://www.amazon.com/Hynix-HMT451S6AFR8A-PB-PC3-12800-DDR3-1600MHz-Unbuffered/dp/B00FKEZ218/ref=pd_sxp_f_pt


kobby2k6, if you ordered the hynix HMT451S6AFR8A-PB and it is exact same memory as the memory you already have, then that is the correct memory. You didn't say if you got 2 4GB SODIMM's, but if you did it might have been that only 1 was bad. You could debug this by testing 1 of the new SODIMM's in the laptop at a time. Did you do this? Did both fail?

How did you verify that you have the same memory? Did you use something like CPU-Z or hwinfo64 to see what you already have installed. Sometimes the names are close, off by 1 letter, so make sure you have the exact part number.

43021

If you have the same exact part number as SteelersFANinMA , then either the 4GB or 8GB part numbers listed should work fine. And, most definitely installing the exact same part number will work :)

Let us know how the new parts work out :)

kobby2k6
11-11-2014, 07:46 AM
I only purchased 1 4GB stick and I made sure the numbers matched but I possibly received bad ram. Am i forced to get 2*4 or 2*8 and not just 1 stick of 4GB ram or 8 GB ram? I used hwinfo64 to make sure the numbers matched for the RAM. I will order again soon and try and update after my results.

hmscott
11-11-2014, 08:25 AM
I only purchased 1 4GB stick and I made sure the numbers matched but I possibly received bad ram. Am i forced to get 2*4 or 2*8 and not just 1 stick of 4GB ram or 8 GB ram? I used hwinfo64 to make sure the numbers matched for the RAM. I will order again soon and try and update after my results.

kobby2k6, you might try another supplier. You can add 1 at a time, but it is good to get them in pairs or 4 at a time from the same manufacturing run, to match characteristics.

Good luck :)

kobby2k6
11-12-2014, 05:46 AM
thanks for the advice

neogenesis
11-12-2014, 06:28 AM
Hi Scott, I tried removing all the RAM one-by-one & all of them I got BSOD ( IRQL_NOT_LESS_OR_EQUAL). But when I replace my old RAM (Samsung 4x4gb 1Rx8 PC3L-12800S-11-11-B2) now I also got BSOD. Here's the link of my MiniDump files http://alturl.com/hmgpt I don't know how to read them. Thanks.

hmscott
11-12-2014, 08:15 AM
Hi Scott, I tried removing all the RAM one-by-one & all of them I got BSOD ( IRQL_NOT_LESS_OR_EQUAL). But when I replace my old RAM (Samsung 4x4gb 1Rx8 PC3L-12800S-11-11-B2) now I also got BSOD. Here's the link of my MiniDump files http://alturl.com/hmgpt I don't know how to read them. Thanks.

neogenesis, yipe... sounds like the process of dis-assembly may have zorched something.

You need to carefully, calmly, and slowly dis-assemble it again, and look for loose cables, and use some compressed air to blow debris out from under the soldered parts - something might be shorting a land/leg/arm from one of the chips. It might also be the way you plugged in the memory.

To take out a memory SODIMM, use 2 thumb nails to pull open the side springs - tongs - ribs - holding the memory in place - the SODIMM will pop up and you can lift it toward 90' vertical and it will pull out/

To insert, put the SODIMM into the slot near 90', wiggle it into the slot while tilting it down toward horizontal until the side springs click over the SODIMM.

This time when you pull the memory use the compressed air to shoot across and into the side of the slot, blowing toward and out the other side of the slot, to get out anything that might have been embedded into the slot by the SODIMM.

After taking out the SODIMM's, look at the pads that connect into the socket, look for debris/dirt across the pads. If it looks dull / "not shiny", you can use a soft pink eraser to "erase" across the pads to clean them - this is usually only necessary for memory that has been installed for a long time - but it's worth a try.

If you can't get it stable again, RMA it to Asus with the original memory installed.

Explain you tried to upgrade the memory, and it failed with BSOD's and even with the new memory pulled out, you are still getting BSOD's on the original configuration.

Be honest, and answer any questions Asus has, and they will fix it for you.

Give it a little more debugging, as you were stable before, you should be stable now. :)

Good luck.

kobby2k6
11-18-2014, 01:54 AM
I followed your advice and it worked. I ordered two sticks of 4GB ram and tested one at a time as well and a single 4gb stick works along with the 8 GB originally in my G750JM. I think I got a bad stick of ram when I first ordered this ram a couple of months ago. I currently have 16 GB of ram and my PC is working fine. Thanks for all your advice and tips; you are a life saver ( i know it's just a ram upgrade lol).

airatin
12-28-2014, 08:34 PM
Hi everyone,

I have a G750JW-RB71-CB which has 4 SODIMM slots; according to lshw (Linux program) there are 4 of the HMT451S6AFR8A-PB (4GB Hynix) for a total of 16GB, but I want to take advantage of the full 32GB available without voiding the warranty.

Basically I can only take out 2 of the 4GB slots. The only way that I know of to get the full 32 GB is to leave the 2x4GB (that are unreachable anyway) and put in 1x8GB and 1x16GB.

Problem is, I can't find the equivalent of this same make/model/etc for 16GB, only 8GB! The 8GB is HMT41GS6AFR8A-PB, but even if I get 2x8GB I still only have 2x4GB on the other side for a total of 24GB :(

Are there any suggestions on what to do without voiding the warranty?

hmscott
12-29-2014, 08:49 PM
Hi everyone,

I have a G750JW-RB71-CB which has 4 SODIMM slots; according to lshw (Linux program) there are 4 of the HMT451S6AFR8A-PB (4GB Hynix) for a total of 16GB, but I want to take advantage of the full 32GB available without voiding the warranty.

Basically I can only take out 2 of the 4GB slots. The only way that I know of to get the full 32 GB is to leave the 2x4GB (that are unreachable anyway) and put in 1x8GB and 1x16GB.

Problem is, I can't find the equivalent of this same make/model/etc for 16GB, only 8GB! The 8GB is HMT41GS6AFR8A-PB, but even if I get 2x8GB I still only have 2x4GB on the other side for a total of 24GB :(

Are there any suggestions on what to do without voiding the warranty?

airatin, technically you only void the warranty if you break something when you pull it apart - or if you tear/break the seal sticker across the CPU heatsink screw(s).

But, it is a real pain to take apart the G750 to get at the top 2 SODIMM slots. There are youtube.com g750 disassembly videos, but you are pretty much on your own.

It isn't impossible, and any calm rational person that has built and taken apart / put back together a desktop computer has a good shot at completing the task.

I would rather do it myself than have a computer repair shop do it. If you have access to a Fry's, Microcenter, etc service department they can do it - they won't want to do it, and will charge you $$ but they can do it if you ask nicely.

Asus won't do it for you. They say only an Asus service center can take it apart to service components, then they tell you they won't install memory upgrades :)

If you are going through all the trouble of pulling it apart, I would invest in matched set of 4 x 8GB 2133mhz SODIMM's from G.skill. There is a real performance difference, and the cost is about the same or less than the 8GB Hynix / Hyundai new - laptop pulls of the Hynix / Hyundai 8GB are cheaper.

G.SKILL Ripjaws 32GB (4 x 8G) 204-Pin DDR3 SO-DIMM DDR3L 2133 Laptop Memory Model F3-2133C11Q-32GRSL
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231776

It works:

G750 Haswell Boards Support 2133MHz SODIMM's
http://rog.asus.com/forum/showthread.php?47957-G750-Haswell-Boards-Support-2133MHz-SODIMM-s

As long as you need to purchase 4 new 8GB SODIMM's it is definitely a good option :)

Or, you could start with 2 x 8GB Hynix for now, and go to 24GB. I had 3 x 8 GB Hynix so it was an obvious choice for me to get 1 more Hynix 8GB.

Please come back and let us know how it works out :)

1aco
01-08-2015, 05:55 AM
Hey All..

After reading almost the entire Thread I'm still confused.. I have ASUS G750JM-T4104H LAPTOP
Intel Core i7 4710 HQ-prosessor
NVIDIA GeForce GTX 860M 2 GB
8 GB Ram og 1 TB hard
802.11ac og BT 4.0

I am planing on upgrading to 16GB by buying one 8GB ram and from what I understood this one could do the job..

Crucial DDR3 SO-DIMM 1600MHz 8GB
1600Mhz (PC3-12800), CL11, 204pin, 1.35V/1.5V

it is 1.35V and should I go with one 8GB or with two 4 GB.. I am thinking of buying one 8GB so if later I want an extra 8GB there is still one free slot..

Hope to hear from you guys..

Hamoudp735
01-11-2015, 12:23 AM
How do i know if i have 1.5v memory or 1.35v memory in G750JM?

hmscott
01-11-2015, 12:41 AM
How do i know if i have 1.5v memory or 1.35v memory in G750JM?

Hamoudp735, this thread is a memory sticky for G750 memory, start reading from newest to oldest posting in this thread and you will get your memory questions answered.

chivagott
01-30-2015, 11:31 PM
Hi,

I've read a lot from this topic, but I have still some doubts.

I have a G750JZ which has 16GB (in the inner slots), can I just buy 16GB @ 2133 MHz or should I buy the whole 32?

I guees is the same if I buy two 16 gb packages than if I buy one 32GB package, finally both equals 32gb..... isnt it??

And finally, whats the difference between this RAMs, they all seem to work @ 1.35v

http://www.amazon.com/Corsair-Vengeance-Performance-2133MHz-CMSX16GX3M2B2133C11/dp/B00H33JU3K/ref=sr_1_3?ie=UTF8&qid=1422646761&sr=8-3&keywords=2133MHz+so-dimm

http://www.amazon.com/G-Skill-Ripjaws-2133MHz-SO-DIMM-Low-voltage/dp/B00J4GMB3A/ref=pd_sim_sbs_pc_2?ie=UTF8&refRID=0XQVP3EP9YS94YV33GPK

http://www.amazon.com/G-SKILL-Ripjaws-204-Pin-SO-DIMM-F3-2133C11Q-32GRSL/dp/B00M0DAAPK/ref=sr_1_7?ie=UTF8&qid=1422659325&sr=8-7&keywords=g.skills+32+gb+2133+ripjaws

Thanks in advance!

Skullzero7
02-04-2015, 12:52 PM
I bought 2x4gb ddr3l 1.35v low profile kingston ram and only today has it prevented my laptop from powering up. My laptop is the g750jm and the ram has been working fine when I got it on the 29th of Jan but it suddenly shutdown today. Have I just wasted $100 on ram or is there something wrong with my laptop?

hmscott
02-05-2015, 03:09 PM
I bought 2x4gb ddr3l 1.35v low profile kingston ram and only today has it prevented my laptop from powering up. My laptop is the g750jm and the ram has been working fine when I got it on the 29th of Jan but it suddenly shutdown today. Have I just wasted $100 on ram or is there something wrong with my laptop?

Skullzero7, G750's aren't as understanding mixing make/model of memory, but if it was running, it should stay running... did you change anything internally - disks? - that may have disturbed the seating of the memory?

How do you know it was caused by the memory? Did you remove it and it boots fine without it? You could try swapping in 1 SODIMM at a time, make sure it is seated well, and run on 1 at a time to see if 1 of the SODIMM's failed - unlikely that both failed.

You could use CPU-Z to see what memory came with your laptop, and order more of it... this time getting the 8GB version of that make/model family if you received 4GB SODIMM's. At least that would be an upgrade.

You should be covered under warranty if the SODIMM(s) failed. Try contacting the vendor when you are sure of the fault.

Please come back and let us know how it works out :)

Skullzero7
02-06-2015, 05:29 AM
Skullzero7, G750's aren't as understanding mixing make/model of memory, but if it was running, it should stay running... did you change anything internally - disks? - that may have disturbed the seating of the memory?

How do you know it was caused by the memory? Did you remove it and it boots fine without it? You could try swapping in 1 SODIMM at a time, make sure it is seated well, and run on 1 at a time to see if 1 of the SODIMM's failed - unlikely that both failed.

You could use CPU-Z to see what memory came with your laptop, and order more of it... this time getting the 8GB version of that make/model family if you received 4GB SODIMM's. At least that would be an upgrade.

You should be covered under warranty if the SODIMM(s) failed. Try contacting the vendor when you are sure of the fault.

Please come back and let us know how it works out :)

When it first happened, I took both memory sticks out and it worked, but now it seems completely random when my laptop will refuse to turn on. I've left them out since it's happened but my laptop will not turn on occasionally but the lights for power, wifi, and the numlock light will go on but nothing else. I've tried putting only 1 in at a time in each slot and that didn't work. Once the memory is put in and removed, after a few tries my laptop will eventually turn on. Is this a hardware problem cause by the memory? Will I be able to have it repaired for free if something is defective, i've only had it for around 7 months and my warranty is 2 years but I'm in a different country from where I purchased it. Thanks.

hmscott
02-06-2015, 07:30 AM
When it first happened, I took both memory sticks out and it worked, but now it seems completely random when my laptop will refuse to turn on. I've left them out since it's happened but my laptop will not turn on occasionally but the lights for power, wifi, and the numlock light will go on but nothing else. I've tried putting only 1 in at a time in each slot and that didn't work. Once the memory is put in and removed, after a few tries my laptop will eventually turn on. Is this a hardware problem cause by the memory? Will I be able to have it repaired for free if something is defective, i've only had it for around 7 months and my warranty is 2 years but I'm in a different country from where I purchased it. Thanks.

Skullzero7, which model number kingston ram did you install? When you have it installed, and you look at that slot with CPU-Z SPD tab, what Voltage does it say?

46284

There are some memory that say "tested at 1.35v", but actually have 1.5v programmed in to the SPD - which the laptop uses to set the memory voltage... which means it runs at 1.5v in the G750...so check what that memory SPD has for the voltage value with CPU-Z SPD.

If your laptop is unstable without the memory, then you have a couple of choices. Do a software reset from F9 to your existing disk, losing all your installs/data. Or get another 2.5" drive to use for a restore from Asus Backtracker flash recovery for testing.

First, make an Asus Backtracker USB 3.0 16GB flash recovery drive, and get a 2.5" test drive - upgrade to an SSD or get an inexpensive HDD for testing.

If you are still unstable, you will need to RMA the laptop to Asus for repair. Document the problem with the random crashes, that you tried to reset the OS and still have the random crashes.

https://vip.asus.com <== create a login, register your laptop, file a Technical Inquiry with the details of the random crashes and what you did to try to fix it. Leave out the memory discussion, as crashes happen without the additional memory installed.

Please let us know how it worked out :)

Skullzero7
02-08-2015, 08:58 AM
Skullzero7, which model number kingston ram did you install? When you have it installed, and you look at that slot with CPU-Z SPD tab, what Voltage does it say?

46284

There are some memory that say "tested at 1.35v", but actually have 1.5v programmed in to the SPD - which the laptop uses to set the memory voltage... which means it runs at 1.5v in the G750...so check what that memory SPD has for the voltage value with CPU-Z SPD.

If your laptop is unstable without the memory, then you have a couple of choices. Do a software reset from F9 to your existing disk, losing all your installs/data. Or get another 2.5" drive to use for a restore from Asus Backtracker flash recovery for testing.

First, make an Asus Backtracker USB 3.0 16GB flash recovery drive, and get a 2.5" test drive - upgrade to an SSD or get an inexpensive HDD for testing.

If you are still unstable, you will need to RMA the laptop to Asus for repair. Document the problem with the random crashes, that you tried to reset the OS and still have the random crashes.

https://vip.asus.com <== create a login, register your laptop, file a Technical Inquiry with the details of the random crashes and what you did to try to fix it. Leave out the memory discussion, as crashes happen without the additional memory installed.

Please let us know how it worked out :)

I've put the memory sticks back in and my laptop seems to boot up again. I haven't had many problems since it has crashed but I haven't been turning it off much, mostly putting it to sleep cause I'm worried it might not start up again and the problem might return. I've attached the cpu-z data for both sticks of ram.4631246313

hmscott
02-11-2015, 03:22 AM
I've put the memory sticks back in and my laptop seems to boot up again. I haven't had many problems since it has crashed but I haven't been turning it off much, mostly putting it to sleep cause I'm worried it might not start up again and the problem might return. I've attached the cpu-z data for both sticks of ram.

Skullzero7, the memory is running at 1.35v ok, and you have installed them in the paired slots so under the Memory tab, it should say Dual for channel :)

Do you have any other memory still installed? Or just the Kingston? Please post both/either of the original memory CPU-Z SPD tabs + memory.

You shouldn't need to be so careful with running the laptop, in fact you want to shutdown, sleep, etc several times a day - don't hold back - to make sure everything stays stable - better to find a fix problems now than find them later.

Re-seating the memory may be all that was needed :)

Light
02-24-2015, 01:53 PM
I need to increase & upgrade my G750 memory, either adding more of the same brand/spec. or replacing the lot with upgraded memory 1.35v.

Having reading through this very interesting thread it seems one or two people have fitted and are running DDR3 2133MHz or DDR3 1866MHz memory.

Has anyone here fitted G.Skill Ripjaws DDR3 2133MHz SO-DIMM or G.Skill Ripjaws DDR3 1866MHz SO-DIMM and found any stability issues on their G750 at either of these upgraded memory speeds ?
(note - both of the above use Samsung DDR3 SDRAM memory chips)

Is anyone running with any other brands of 2133MHz or 1866MHz they find work ok and are stable using 1.35v ?

Is it a case of fit and forget or is anything else required to ensure they function ok ?

Thanks.

hmscott
03-01-2015, 09:21 PM
I need to increase & upgrade my G750 memory, either adding more of the same brand/spec. or replacing the lot with upgraded memory 1.35v.
Having reading through this very interesting thread it seems one or two people have fitted and are running DDR3 2133MHz or DDR3 1866MHz memory.
Has anyone here fitted G.Skill Ripjaws DDR3 2133MHz SO-DIMM or G.Skill Ripjaws DDR3 1866MHz SO-DIMM and found any stability issues on their G750 at either of these upgraded memory speeds ?
(note - both of the above use Samsung DDR3 SDRAM memory chips)
Is anyone running with any other brands of 2133MHz or 1866MHz they find work ok and are stable using 1.35v ?
Is it a case of fit and forget or is anything else required to ensure they function ok ?
Thanks.

Light, this is such a long thread now, but both G.Skill 1866mhz and 2133mhz parts have been mentioned and do work fine. :)

And, there is another post apart from this Memory sticky thread about the 2133mhz part:

G750 Haswell Boards Support 2133MHz SODIMM's
https://rog.asus.com/forum/showthread.php?47957-G750-Haswell-Boards-Support-2133MHz-SODIMM-s&highlight=g.skill+1866mhz+sodimm

VSS-HH
04-05-2015, 09:49 AM
I confirm correct operation 2133 @ 1,35v
laptop works perfectly
3d11 (http://www.3dmark.com/3dm11/9642257)
48153

Protervis
04-15-2015, 05:05 PM
I need to increase & upgrade my G750 memory, either adding more of the same brand/spec. or replacing the lot with upgraded memory 1.35v.

Having reading through this very interesting thread it seems one or two people have fitted and are running DDR3 2133MHz or DDR3 1866MHz memory.

Has anyone here fitted G.Skill Ripjaws DDR3 2133MHz SO-DIMM or G.Skill Ripjaws DDR3 1866MHz SO-DIMM and found any stability issues on their G750 at either of these upgraded memory speeds ?
(note - both of the above use Samsung DDR3 SDRAM memory chips)

Is anyone running with any other brands of 2133MHz or 1866MHz they find work ok and are stable using 1.35v ?

Is it a case of fit and forget or is anything else required to ensure they function ok ?

Thanks.

Hi Hmscott

I went through the whole thread and downloaded both programms to check my ram model. I have a 8gb used in one slot, Samsung m471b1g73qh0-yk0 1.35V. Could you please do me a favour and suggest which model of ram should i go for? I am interested in upgrading my ram to 24gb.

Many thanks in advance.

hmscott
04-15-2015, 05:59 PM
Hi Hmscott
I went through the whole thread and downloaded both programms to check my ram model. I have a 8gb used in one slot, Samsung m471b1g73qh0-yk0 1.35V. Could you please do me a favour and suggest which model of ram should i go for? I am interested in upgrading my ram to 24gb.
Many thanks in advance.

Protervis, you answered your own question, you should get the same memory make/model you already have installed, get 2 or 3 more of the Samsung m471b1g73qh0-yk0 1.35V :)

You could also replace the Samsung m471b1g73qh0-yk0 1.35V and replace it will all new memory - all the same make and model 1.35v SPD memory.

Googling Samsung m471b1g73qh0-yk0 1.35V there are lots of places to get new SODIMM's:

https://www.google.com/search?num=50&safe=off&q=Samsung+m471b1g73qh0-yk0&oq=Samsung+m471b1g73qh0-yk0&gs_l=serp.3..0.6068.6068.0.7022.1.1.0.0.0.0.244.24 4.2-1.1.0.msedr...0...1c.1.64.serp..0.1.244.h5RorU6dOK A

There are a bunch listed on ebay - always verify the part number on individual listings on ebay, sometimes there are keyword hits but the actual item isn't that exact number - beware.

http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313.TR0.TRC0.H0.XSamsung+m 471b1g73qh0-yk0.TRS0&_nkw=Samsung+m471b1g73qh0-yk0&_sacat=0

I bought my 8GB Hyundai SODIMM from ebay, a Macbook Pro pull/used, matches the other 3 8GB Hyundai SODIMM's perfectly :)

48391

Protervis
04-15-2015, 06:04 PM
Protervis, you answered your own question, you should get the same memory make/model you already have installed, get 2 or 3 more of the Samsung m471b1g73qh0-yk0 1.35V :)

You could also replace the Samsung m471b1g73qh0-yk0 1.35V and replace it will all new memory - all the same make and model 1.35v SPD memory.

Googling Samsung m471b1g73qh0-yk0 1.35V there are lots of places to get new SODIMM's:

https://www.google.com/search?num=50&safe=off&q=Samsung+m471b1g73qh0-yk0&oq=Samsung+m471b1g73qh0-yk0&gs_l=serp.3..0.6068.6068.0.7022.1.1.0.0.0.0.244.24 4.2-1.1.0.msedr...0...1c.1.64.serp..0.1.244.h5RorU6dOK A

There are a bunch listed on ebay - always verify the part number on individual listings on ebay, sometimes there are keyword hits but the actual item isn't that exact number - beware.

http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313.TR0.TRC0.H0.XSamsung+m 471b1g73qh0-yk0.TRS0&_nkw=Samsung+m471b1g73qh0-yk0&_sacat=0

I bought my 8GB Hynix SODIMM from ebay, a Macbook Pro pull/used, matches the other 3 8GB Hynix SODIMM's perfectly :)

Thank you very much for your reply Hmscott, i just purchased 2 x 8 gb of the same model on ebay. :)

Protervis
04-17-2015, 05:18 PM
Ram installed 24gb now seems to work fine.

hmscott
04-18-2015, 04:40 AM
Thank you very much for your reply Hmscott, i just purchased 2 x 8 gb of the same model on ebay. :)


Ram installed 24gb now seems to work fine.

Protervis, glad to hear it worked out :)

Now you can disable Windows pagefile and hibernate, and save a bunch of space on your C drive.

Set pagefile to 0 size, and start a cmd windows As Administrator and run

powercfg /hibernate off

Then reboot and you should get back about 30GB on your C drive.

Just make sure you watch memory usage so you don't go past 24GB :)

Protervis
04-27-2015, 10:59 AM
Protervis, glad to hear it worked out :)

Now you can disable Windows pagefile and hibernate, and save a bunch of space on your C drive.

Set pagefile to 0 size, and start a cmd windows As Administrator and run

powercfg /hibernate off

Then reboot and you should get back about 30GB on your C drive.

Just make sure you watch memory usage so you don't go past 24GB :)

That's really useful, thanks again for the tip! :)