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View Full Version : Samsung XP941 256GB owners, please post your AS SSD Benchmarks



pokerface
02-16-2015, 11:46 PM
Here are mine and the 4K Read / Write seem very slow. I got the same results on both the factory installed image and on my current clean install.

Also, is it true that the left port on my G751JY is SATA III and the right port is SATA II?? Very disappointed to hear this, why in the world would ASUS put such a limitation!

http://i58.tinypic.com/2urxh68.jpg

ELZZZORRO
02-17-2015, 03:38 AM
Not sure what exactly is a XP941, however, below are the Benchmarks from my G751JY.


M.2 PCIe SSD Drive

46516


SSD EVO (on steroids using RAPID Mode with 4GBs allocated only for system RAPID MEM) sitting on bay #2 but connected to Bay #1 using an ext SATA cable

46517


Comments:

Bay #2 is in fact SATA II not SATA III. Asus released a BIOS update (BIOS 206 PCIE SSD DID/VID) 2 days ago, as soon as I have time, I am going to check if this BIOS 206 rectified the issue with bay #2, I have the feeling is now a SATA III...keeping my fingers crossed.

Clintlgm
02-17-2015, 04:35 AM
Not sure what the XP941 is here's my G75VW With Samsung 850 Pro Rapid mode enabled, on a build I've had running for a few months now.
46518

Clintlgm
02-17-2015, 05:27 AM
Your M.2 SSD seems to be running very slowly

Lumlx
02-17-2015, 07:16 AM
Disable that rapid mode. It gives false results...

pokerface
02-17-2015, 11:09 AM
My system came with a Samsung XP941 256GB SSD: http://www.anandtech.com/show/8430/pcie-ssd-faceoff-samsung-xp941-128gb-256gb-and-ocz-revodrive-350-480gb-reviewed

Guys for the love of GOD stop posting these stupid/fake RAPID results!

If you turn on CRAPID mode, you are not benchmarking your SSD anymore, you are benchmarking your RAM.

Translate that intro real world performance and it means absolutely nothing.

For example, test this.....

Copy a huge 10GB + video file or whatever large file you want from your C: partition to another partition on another disk......

you will notice that the Windows file copy progress finishes insanely fast.....the moment it finishes the copy, I want you to restart your system

then check that file you copied, it would be corrupt, reason is, yes the file copy progress finished fast, but it didn't finish really, all it was doing is copying the file from your RAM cache (RAPID) onto the real disk.

so it's just cheating + placebo effect

And after you read this, you will never enable RAPID again.....it will actually make your performance worse not better

A Closer look at the crappy CRAPID (http://techreport.com/review/25282/a-closer-look-at-rapid-dram-caching-on-the-samsung-840-evo-ssd/8)

Clintlgm
02-17-2015, 04:04 PM
Ok here is the same drive without Rapid mode your PCIe M.2 SSD is still running slow barely faster than this 2.5" SATA SSD

46527

joshindaphils
02-21-2015, 08:23 PM
Ok here is the same drive without Rapid mode your PCIe M.2 SSD is still running slow barely faster than this 2.5" SATA SSD


In my world 2x the speed lands in a different category than slow, and barely faster... In the future there will be faster M.2 drives around and they could possibly reach speeds of 1.6GB/s on reads and writes. For now the XP941 is the single drive king.

hmscott
02-21-2015, 10:39 PM
Ok here is the same drive without Rapid mode your PCIe M.2 SSD is still running slow barely faster than this 2.5" SATA SSD


In my world 2x the speed lands in a different category than slow, and barely faster... In the future there will be faster M.2 drives around and they could possibly reach speeds of 1.6GB/s on reads and writes. For now the XP941 is the single drive king.

ELZZZORRO's M.2 PCIE x4 speed is the best you can get right now, the XP941 512GB is the speed king. :)

The RAPID is useless really, it actually slows things down - with double buffering in memory - actually triple buffering overall. Turn it off and save the memory and speed up apps a little bit.

It would be better to use that RAM for a RAMDISK and put your temp files and build / scratch space in there. If you dedicate enough memory to RAMDISK you can run lots of things with great benefit from there - or no benefit at all - you have to test what is improved.

The new Samsung SM951 might actually hit 1.6GB/sec READ/WRITE in the same socket in the G751, but it isn't quite available yet, something to look forward to :)

hmscott
02-21-2015, 11:00 PM
Not sure what exactly is a XP941, however, below are the Benchmarks from my G751JY.

ELZZZORRO, you can check what device you have several ways, hwinfo64 gives lots of details, summaries, and monitors temps and performance for lots of measurements.

crystaldiskinfo gives good info as well as crystaldiskmark for benchmarking.

One trick to get more performance is gonna sound weird, but it works. Use a disk optimizer... :)

The G750JH/JZ when it comes out of the box does about 700MB/sec READ and 500MB/sec WRITE on it's 2 x 128GB RAID0. Merging the partitions into the C partition - more space - and using a tool like RAXCO's Perfectdisk gets the speed up to 1050MB/sec READ and 600MB/sec WRITE.

46725

Raxco Perfectdisk - set Optimization to SmartPlacement for the first pass, select All Fragmented files then optimize, and then change it to SSDOptimize for automatic optimization maintenance.

46726

Free 30 day Trial
http://download.raxco.com/perfectdisk-pro

I would be curious if it helps your AS SSD Benchmark / Crystaldiskmark benchmark numbers.

You did combine partitions into the C partition already?

joshindaphils
02-22-2015, 02:15 PM
The new Samsung XP951 might actually hit 1.6GB/sec READ/WRITE in the same socket in the G751, but it isn't quite available yet, something to look forward to :)

http://www.theregister.co.uk/2015/01/08/samsungs_small_screamer/

Drive does look promising, Mashel@ASUS had stated before that the M.2 slot in the G751 is Gen3. I'll be looking forward to the first reported testing to see is we get the proper Gen3 speeds. Available in 1TB capacity as well... I may have found my x-mass gift for myself hehe.

hmscott
02-22-2015, 09:34 PM
http://www.theregister.co.uk/2015/01/08/samsungs_small_screamer/

Drive does look promising, Mashel@ASUS had stated before that the M.2 slot in the G751 is Gen3. I'll be looking forward to the first reported testing to see is we get the proper Gen3 speeds. Available in 1TB capacity as well... I may have found my x-mass gift for myself hehe.

joshindaphils, the Gen3 speed listing is new, that's great news if the SM951 READs at over 2GB/sec :)

46778

Previous reports, and the Samsung site (missing now), said 1TB capacity is going to ship, but that article and a newer press release from Samsung only said up to 512GB...hopefully it is a staged release with 1TB later.

Samsung Electronics Now Mass Producing an Extremely Fast, Low-powered PCIe SSD for Today’s Notebook PCs - only says up to 512GB
https://www.samsung.com/za/news/local/samsung-electronics-now-mass-producing-an-extremely-fast-low-powered-pcie-ssd-for-todays-notebook-pcs

Samsung SM951 512GB M.2 PCIe SSD Review - SM951 1TB mention
http://www.tweaktown.com/reviews/6951/samsung-sm951-512gb-2-pcie-ssd-review/index.html

"At the SSD Global Summit, Samsung listed the SM951 as a 1TB product, but the specifications sheet only shows the product going up to 512GB. Samsung may have struck a deal to offer the 1TB model to a specific OEM, maybe one that is fruity, but we don't know at this time."

jemmos
07-23-2015, 07:07 PM
Bit late to the party, but i'm sorry to say, that the 4x PCIe Slot on the G751 is gen2 only and will always be gen2.

The Intel® 8 Series/C220 Series Chipset only supports 8 Gen2 PCIe lanes.
-Intel® 8/C220 Series Chipset Platform Controller Hub: Datasheet Page 45, PCI Express Interface
http://http://www.intel.com/content/www/us/en/chipsets/8-series-chipset-pch-datasheet.html

The 47xx series of i7 Cpus have 16 x PCIe Gen3 lanes but... all them goto your GTX-9XXm.
-Intel ARK Datasheet
http://ark.intel.com/products/78930/Intel-Core-i7-4710HQ-Processor-6M-Cache-up-to-3_50-GHz

I'll put this here too as there seems to be a lot of confusion on it.

G751's, have a maximum (some have less) of 2 Gen3 Sata 6Gbit ports. The first, Sata port 0, is your 4x PCIe Gen2 Interconnect if you have it. The 2nd, is your standard Gen3 Sata interconnect but is stupidly in the same bay as the 4x PCIe interconnect letting you only have 1 or the other.
--- unless you buy a 6 inch female to male Sata Gen3 Extension and loop it under the bridge to the next bay, then you can have both. Thers guides elsewhere to do this.

The other bay, contains sata port 3, a Gen2 Sata 3Gbit connection.. This is part of the chipset hardware, it cannot be changed or upgraded in anyway. The connecter on the other hand is Sata Gen3 as is the host controller interface, which is why benchmarking tools report it as Sata3 6Gbit, running at 3Gbit Sata2.

-Intel® 8 Series/C220 Series Chipset Datasheet, page 54, table 1-4 note 11
http://www.intel.com/content/www/us/en/chipsets/8-series-chipset-pch-datasheet.html

AQUASTEVAE
07-24-2015, 07:02 PM
Guys for the love of GOD stop posting these stupid/fake RAPID results!

If you turn on CRAPID mode, you are not benchmarking your SSD anymore, you are benchmarking your RAM.

Translate that intro real world performance and it means absolutely nothing.

For example, test this.....

Copy a huge 10GB + video file or whatever large file you want from your C: partition to another partition on another disk......

you will notice that the Windows file copy progress finishes insanely fast.....the moment it finishes the copy, I want you to restart your system

then check that file you copied, it would be corrupt, reason is, yes the file copy progress finished fast, but it didn't finish really, all it was doing is copying the file from your RAM cache (RAPID) onto the real disk.

so it's just cheating + placebo effect

And after you read this, you will never enable RAPID again.....it will actually make your performance worse not better

A Closer look at the crappy CRAPID (http://techreport.com/review/25282/a-closer-look-at-rapid-dram-caching-on-the-samsung-840-evo-ssd/8)

you couldn't be MORE WRONG. i just did your little test of copying a large video file from sys partition to another partition, twice, and the video played perfectly after an immediate restart both times.
so stop posting bs about rapid mode on here. it does work, and it works well. the benchmarks might show incorrect information, but you can't argue with actual results. these large video files copied
over to a different partition in mere seconds. i then restarted my computer just like you said, and they played perfectly fine when it came back up.

AQUASTEVAE
07-25-2015, 06:50 PM
a couple of marks with the 951. and keep in mind that windows 10 still doesn't have proper ahci drivers developed yet. why they haven't done this well is beyond me, but the scores are much higher on windows 7, where i got around 1600 for reading and 1500 for writing.

jinishans
08-03-2015, 04:02 PM
Bit late to the party, but i'm sorry to say, that the 4x PCIe Slot on the G751 is gen2 only and will always be gen2.

......


jemmos

Per what you're saying (see below on PCIx spec from your link (see below), there are only 16 lanes, in that the 970/980 Nvidia card, SATA 3 port, may be 1 PCIx Gen 2, but not 3 can be there. Is that right ? I kind of suspected that, but, couldn't go deep into it, cos not many articles are there to understand/talk about it more on this topic, even in AnandTech.

Pls clarify.

Also, I feel/read from other threads, the Desktop x99 board itself is constrained with actual PCIx Gen 3 properly to get the full speed, due to the Intel x99 chipset config, due to which I'm waiting for Asus/others to comeup with x1xxx chipset, should be available by mid Aug for my next Desktop DIY build.

Your thoughts on this pls as well.

PCI Express Revision 3
PCI Express Configurations ‡ 1x16, 2x8, 1x8 2x4
Max # of PCI Express Lanes 16

aeolisio
08-04-2015, 03:29 AM
jemmos

Per what you're saying (see below on PCIx spec from your link (see below), there are only 16 lanes, in that the 970/980 Nvidia card, SATA 3 port, may be 1 PCIx Gen 2, but not 3 can be there. Is that right ? I kind of suspected that, but, couldn't go deep into it, cos not many articles are there to understand/talk about it more on this topic, even in AnandTech.

Pls clarify.

Also, I feel/read from other threads, the Desktop x99 board itself is constrained with actual PCIx Gen 3 properly to get the full speed, due to the Intel x99 chipset config, due to which I'm waiting for Asus/others to comeup with x1xxx chipset, should be available by mid Aug for my next Desktop DIY build.

Your thoughts on this pls as well.

PCI Express Revision 3
PCI Express Configurations ‡ 1x16, 2x8, 1x8 2x4
Max # of PCI Express Lanes 16

jemmos was wrong second page
https://rog.asus.com/forum/showthread.php?71603-G751JY-with-Samsung-sm951-pcie-ssd-and-new-bios-208-feedback-requested!&p=521823#post521823