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View Full Version : Are the G750 Series Sata ports 6GB/s?



Feral
08-29-2013, 01:14 PM
Looking at Sears (http://www.sears.com/asus-g750jh-17.3inch-notebook-with-intel-core/p-00343759000P?prdNo=4&blockNo=4&blockType=G4), it shows Sata 3 GB/s on the board:

I noticed that the ROG site (http://www.asus.com/Notebooks_Ultrabooks/G750JH) shows that the HDD is 6GB/s but it doesn't say if the controller is 6GB/s. I didn't want to take anything for granted and assume so I am wondering if someone can confirm the spec.

harleedavidson
11-21-2013, 05:19 PM
On my G750JW, HWiNFO64 (http://www.hwinfo.com/)reports that both SATA interfaces are 6Gb/s capable.

However, I can only truly get 6GB/s on one of the interfaces, regardless of how I position the drives. I noticed when I installed a new 256GB Samsung SSD 840 PRO Series to the center HD bay. I was horrified when the bundled Samsung software (http://www.samsung.com/global/business/semiconductor/samsungssd/downloads.html) reported only 3GB/s even after performance tuning. Swapping the drives between each bay I discovered only the SATA port on side bay would ever give full 6GB/s.

Both Samsung software and HWiNFO64 reports agree that the center bay is capable of 6GB/s, but only functions at 3GB/s.

I'm ecstatic to get the 'as advertised' performance now from the Samsung, yet baffled as to why the center bay refuses to function faster than 3GB/s.

Anyone else have this experience?

villiansv
11-21-2013, 06:22 PM
G750JX here. Using an Intel 510 SSD (128GB) I've gotten near-450MB/s sequential read speed in both drive bays. That's well above the SATA 2 300MB/s limit.

pscza
11-21-2013, 06:42 PM
Using Samsung magician I get 528 MB/s on the primary bay and 465 MB/s on the secondary bay (LITEONIT/SAMSUNG EVO) - Both are SSD's

harleedavidson
11-21-2013, 07:01 PM
G750JX here. Using an Intel 510 SSD (128GB) I've gotten near-450MB/s sequential read speed in both drive bays. That's well above the SATA 2 300MB/s limit.

That's interesting, I get solid 6GB/s on the side bay (which I love), but always 3GB/s on the center bay. I can live with the speed since it's just for data storage, but what will happen when I decide replace the HD with another SSD, will I be stuck with that performance? (BIOS/Firmware/Drivers all up to date)

The speed difference seems a little trivial at first, but is very noticeable at boot up on an SSD when you go from 3 to 6MB/s. I'm as much developer as gamer, so even large builds go more than 2x faster, important when testing/debugging.

I'm a solid ASUS customer, they make some of best stuff out there, my 3 year old G53W still flies with it's gen 3 i7, running 2 or 3 full development suites and a multitude of browsers on dual monitors.

My G750 is only 2 weeks old from NewEgg. I wonder if it should go RMA?

ZiggZagg
11-24-2013, 04:53 AM
harleedavidson... ZiggZagg here, nice to meet you. Would you please keep us apprised as to what ASUS says about your drive bay speeds. I have the same machine and drives and would be very interested in whether it is a fixable situation or just a "have to live with it" situation. Thanks in advance, ZZ

gnorin
11-24-2013, 01:11 PM
Hi,

G750JW here. I swapped the 5400 rpm 1TB HD by a 240 GB SSD Seagate and kept the 1 TB as an external HD. From what I can understand the side bay deliver 6GB/s and the other 3GB/s experimentally. I am just wondering is the side bay the one that contain the original HD and the central bay is the one empty? I want to make sure that SSD is at the right place where it can deliver is full potential! Thanks

gazzacbr
11-24-2013, 05:10 PM
hmm, lappy in my sig. i have swapped in 2 x 500GB m4 ssd and readings were almost identical (not raid)
fastest seq speed on CrystalDiskMark was about 500mb/s on either.
both disks are the same of course and reading was almost the same with the standard liteon 250 ssd

eojlin
12-10-2013, 05:21 AM
Using Samsung magician I get 528 MB/s on the primary bay and 465 MB/s on the secondary bay (LITEONIT/SAMSUNG EVO) - Both are SSD's
So, is the primary drive bay the one on the side, and the one in the center is secondary (that drive bay closer to the RAM modules)? Also, will a 9.5mm SSD fit snugly in the drivebay without any adapters?

whosjohnny
09-26-2014, 04:19 AM
Not all G750 area made equal.
Some come with premium ports such as mSATA and others mix SATA-III and SATA-II.

*UPDATE 9-26-2014*

Just received a pair of Samsung 850 PRO 256GB V-NAND SSD and I ran ATTO benchmark, I can *CONFIRM* without a doubt, BOTH SATA ports in my G750JM-DS71 is SATA III @ 6Gb/sec guaranteed.

Both ports achieves 551-553 MB/sec read, 522-524 MB/sec write.

So I'm not sure about older model, I purchased mine in summer of 2014, it's also the lower end model - if it has SATA-III, we can safely assume all 2014 models has SATA-III. If not, it's probably your configuration or drive not G750.

hmscott
09-29-2014, 03:13 PM
Looking at Sears (http://www.sears.com/asus-g750jh-17.3inch-notebook-with-intel-core/p-00343759000P?prdNo=4&blockNo=4&blockType=G4), it shows Sata 3 GB/s on the board:

I noticed that the ROG site (http://www.asus.com/Notebooks_Ultrabooks/G750JH) shows that the HDD is 6GB/s but it doesn't say if the controller is 6GB/s. I didn't want to take anything for granted and assume so I am wondering if someone can confirm the spec.

Feral, you don't say which G750 model you are looking at, is it a G750JW/JX/JH/JS/JM/JZ ?

The models from Bestbuy have been reported to only have 1 SATA III 6.0gb/s port, with the 2nd Bay being SATA II 3.0gb/s.

All the other reports are that the 2nd Bay in most models are SATA III 6.0gb/s as well. This isn't a for sure thing, but test it when you get yours and make sure it is what you want to keep.

The DVD/BD-R port shows is SATA 1 1.5gb/s, so if you plan to replace the Optical drive with a HDD/SSD keep that in mind.

My G750JH has 3 SATA III 6.0gb/s ports, and 1 SATA 1 1.5gb/s Optical port.

When you get the laptop, you can use several programs to look at your hardware details, ports and disk. Here is hwinfo64 Summary - look at the Inventory Pane for more details.

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