AS-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.

Incompressible Sequential Write Performance - AS-SSD

Peak read speed is obviously something the Vertex 3 does very well, while the P3 and 510 fall in second and third places, OCZ has a substantial lead. Now look at what happens when AS-SSD runs a pass of incompressible writes:

Incompressible Sequential Read Performance - AS-SSD

Corsair's P3 is now our leader. What's important to notice here is that Corsair's firmware allows for much higher sequential performance than what Intel outfitted the 510 with, however Intel's drive generally delivers better real world performance as we've seen from our 2011 Storage Bench tests.

AnandTech Storage Bench 2011 - Light Workload Overall System Performance using PCMark Vantage
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  • icrf - Wednesday, June 8, 2011 - link

    Don't forget the Corsair Force Series 3. The manufacturer announced specs are very impressive. We just need it in Anand's hands to see how honest they are.

    I'm trying to decide between the Vertex 3, Force Series 3, and M4 @ 120 GB. I've seen some of those other reviews on the M4, and it really does seem like it degrades more gracefully than anyone else with the capacity drop, so it could be a real contender @ 120 GB.
  • DigitalFreak - Tuesday, June 7, 2011 - link

    "Combine that with Intel's track record for reliability"

    Hasn't Intel had multiple issues with their drives that caused data loss?
  • Anand Lal Shimpi - Tuesday, June 7, 2011 - link

    All of the SSD vendors have had issues of one form or another, Intel seems to have the lowest return rates however (at least based on the only published data at this point - it is supported by the failures I've noticed first hand however).
  • MrAv8er - Tuesday, June 7, 2011 - link

    Yes they have their issues. And the reliability question between the Vertex 3 and the Intel 510 is an interesting one. I just bought an I510 120GB over the Vertex 3 because of the reviews posted at Newegg. Complaints ran in the high teens for total failures, which I found too distastfull to accept, therefore I opted to go Intel which faired much better in the reviews. HOWEVER, that being said, I had an 80GB Intel G1 in my rig running Vista 64 coming up 2 years ago. It bricked itself at about the 7 week mark. Intel eventually replaced it, but the whole process took over 3 weeks.
  • zhill - Tuesday, June 7, 2011 - link

    Good review, another set of excellent data points when considering SSDs. I am actually torn between the older Vertex 2 240GB ($390 on amazon, or $1.6/GB) and a new drive like the 320 300GB or 510 250GB, it will be slower, but for the price it's a sweet deal--as long as it actually works and doesn't become a brick.

    I would be interested in seeing a power consumption graph for the entire StorageBench (or maybe just the light workload) run on each drive. I just wonder to what extent "speed to idle" impacts SSDs as it does in CPUs. It may be that the changes from load to idle are too slow to seriously affect the overall power draw, but that could also very by manufacturer. I think that would give a better perspective on the power story than just the idle and load numbers.
  • casteve - Tuesday, June 7, 2011 - link

    ~120GB is the sweet spot for speed/price. Glad to see some maturation in performance - now we can pretty much pick based on firmware maturity/stability and product reliability.
  • jwilliams4200 - Tuesday, June 7, 2011 - link

    ANAND:

    Isn't the flash on the back of the Intel 320 board likely used for the XOR parity / RAID-4-like feature of the 320 series? I'm not sure why you did not mention that....
  • 24 db/octave - Tuesday, June 7, 2011 - link

    With all the various benchmarks available, which is the closest one that would best predict performance as a Photoshop scratch drive? (Not the Windows or application drive.) I think for Photoshop scratch, it is sequential uncompressed writes & reads, that matters most, but I'm not positive.

    Thanks, Alan
  • buzznut - Tuesday, June 7, 2011 - link

    I also wanted to add my thanks for continually providing the most comprehensive and pertinent coverage of SSDs. Certainly right now the 120GB range hits the sweet spot for performance/real estate/value. I have not seen much coverage of the corsair drives yet, so this is great. Bigger drives are prohibitively expensive for the average user. But current drives are more useful than as just boot drives, it makes sense to have enough room to put your favorite programs on.

    I still think the Vertex3 is the choice for enthusiasts, although its nice to see that intel is still making excellent drives where reliability is key. I am hoping to pick up a vertex3 in the fall after bulldozer hits the desktop. I am sure that firmware will mature by then.
  • GrizzledYoungMan - Tuesday, June 7, 2011 - link

    Question!

    Would appreciate thoughts on this. I'm on a P55 motherboard, with a free x16 slot. If I wanted to use one of the 6Gbps drives with an add-in controller, what sort of performance hit would I be looking at, best case scenario? And which add-in card to use?

    Thanks! Also, this review was pretty darned useful. Bravo.

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