SandForce TRIM Issue & Corsair Force Series GS (240GB) Review
by Kristian Vättö on November 22, 2012 1:00 PM ESTAS-SSD Incompressible Sequential Performance
The AS-SSD sequential benchmark uses incompressible data for all of its transfers. The result is a pretty big reduction in sequential write speed on SandForce based controllers, while other drives continue to work at roughly the same speed as with compressible data.
No surprises in incompressible sequential performance. Incompressible write performance is another aspect that SandForce is focusing on with their SF-3000 series; it's too early for concrete numbers but any and all improvements are welcome.
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R3dox - Friday, November 23, 2012 - link
I see, but that doesn't really answer my question :P.Is there still a performance hit and do you just choose to test under normal rather than optimal conditions or is this a thing of the past?
Kristian Vättö - Friday, November 23, 2012 - link
I tested this quickly a while back but there was no significant difference in performance (small variation always occurs anyway):http://forums.anandtech.com/showthread.php?t=22721...
R3dox - Friday, November 23, 2012 - link
Thanks for the replies :).You say "AFAIK it affected performance with some older SandForce SSDs but when I started testing SSD and asked Anand for all the settings, he just told me to leave it on since it doesn't matter anymore".
But it's a clear difference on my old postville. Granted, the SSD is my boot disc during those tests, but isn't that their most likely use anyway? TBH I'd be interested to know why enabling those powersaving features apparently impact performance only when used as boot disc. When I say 'impact", I mean based on multiple runs, of course.
Lastly, it seems that C-states are the most impactful setting and that one isn't mentioned in the reviews. I suppose you've left those on as well?
JellyRoll - Wednesday, December 5, 2012 - link
that wasnt testing.Schugy - Tuesday, November 27, 2012 - link
Don/t buy MLC rubbish. SLC is really worth it.FunnyTrace - Wednesday, November 28, 2012 - link
Nice going SandForce.1) BSOD problem
2) AES-256 hardware doesn't work (seriously??? hardware doesn't work???)
3) TRIM has not been working properly (what, you failed to GC blocks properly?)
As a lot of people mention, these SSD makers want to use early adopters and PC building enthusiasts as guinea pigs.