PCIe SSD Faceoff: Samsung XP941 (128GB & 256GB) and OCZ RevoDrive 350 (480GB) Tested
by Kristian Vättö on September 5, 2014 3:00 PM ESTAnandTech Storage Bench 2011
Back in 2011 (which seems like so long ago now!), we introduced our AnandTech Storage Bench, a suite of benchmarks that took traces of real OS/application usage and played them back in a repeatable manner. The MOASB, officially called AnandTech Storage Bench 2011 – Heavy Workload, mainly focuses on peak IO performance and basic garbage collection routines. There is a lot of downloading and application installing that happens during the course of this test. Our thinking was that it's during application installs, file copies, downloading and multitasking with all of this that you can really notice performance differences between drives. The full description of the Heavy test can be found here, while the Light workload details are here.
In our 2011 suite the 256GB XP941 is still strong, but the 128GB model and RevoDrive 350 are no better than a SATA drive. The 128GB XP941 simply lacks parallelism because of its small capacity, whereas the RevoDrive is better suited for very intensive workloads (like the 2013 suite). The average service times (although not graphed here) are still better than what SATA drives offer, but the truth is that a RAID array will only help if there are more IO to process i.e. in high queue depth and large transfer situations.
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thel33ter - Friday, September 5, 2014 - link
Excellent review as always.Personally I see the performance as being slightly disappointing, but it's just a matter of time till performance akin to the Intel P3700 is going to be within reach of the average consumer.
Probably a silly question, but would it be possible to RAID two PCIe drives?
vLsL2VnDmWjoTByaVLxb - Friday, September 5, 2014 - link
It is odd that Intel RST is kept from years ago when there are scores and scores of fixes to the drivers since the release you are using. This may dramatically impact test results.I get the desire for bench and legacy scoring, but at a certain point you have to let go of legacy when serious improvements have been made to reliability, errata, bugs, etc, from previous drivers. Not to mention nobody should be using the drivers from this review.
Kristian Vättö - Friday, September 5, 2014 - link
We are in the process of upgrading to a new testbed with the latest drivers, but we stumbled into some incompatibilities that have delayed the transition.Remember that storage drivers are not as important as e.g. GPU drivers where one version can have dramatic improvements to one game. After all, the RST drivers are the same for all drives, so driver improvements should affect all drives pretty much equally.
joannecdinkins - Friday, September 5, 2014 - link
just as Larry answered I didnt even know that people able to get paid $6104 in a few weeks on the internet .go to this site>>>>> paygazette.ℭＯＭ
coburn_c - Friday, September 5, 2014 - link
512GB occupying a desktop pcie slot is still criminal. Works well for mobile devices but we need to get these prices down and these capacities up in the desktop space.Kristian Vättö - Saturday, September 6, 2014 - link
Quite a few of the newer boards already come with M.2 slots, so if you are shopping for a new system you might as well choose a board that has a proper PCIe x4 M.2 slot.Galatian - Saturday, September 6, 2014 - link
But that limits your choice to essentially Intel Z97 or X99 chipset and from my research on Z97 this actually only leaves the ASRock Extreme6 and 9 as well as the mITX ASUS Maximus Impact VII.KarlKaiser - Friday, September 5, 2014 - link
Thanks for this article. It is obvious the storage industry is about to change but what I miss as an end-user is helpful comparisons from journalists like yourself that might help me to figure out what to buy now/soon. Keep it up!For example, for another $100 more than the 512GB Samsung XP941, soon we'll get the 400GB Intel DC P3500, which is on paper twice as fast at W/R 2500/1700 MB/s, if a somewhat smaller capacity.
Kristian Vättö - Saturday, September 6, 2014 - link
The P3500 is something I'll definitely be reviewing (for both, enterprise and client since there's been a ton of interest), but unfortunately we don't have any samples.DMCalloway - Saturday, September 6, 2014 - link
I agree. The Intel DC P series is the one to watch right now.