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. Read speeds are largely unaffected.

Incompressible Sequential Read Performance - AS-SSD

Incompressible Sequential Write Performance - AS-SSD

No real surprises here. The SX900 is slightly faster than the 120GB OCZ Vertex 3 and Corsair Force GT, but this is most likely due to a newer firmware version (it's been a while since we tested Vertex 3 and Force GT). As you may have noticed, NAND plays a big role in SandForce incompressible performance. 240GB Kingston HyperX and Intel SSD 520 are the fastest, followed by 120GB Patriot Wildfire and OCZ Vertex 3 MAX IOPS, both of which utilize 3Xnm NAND. 3Xnm MLC NAND die tops out at 4GB, which means the Wildfire and Vertex 3 MAX IOPS have twice as many NAND dies as 120GB SSDs using 2Xnm MLC NAND. That gives them the benefit of interleaving.

Random and Sequential Read/Write Speed AnandTech Storage Bench 2011
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  • XZerg - Friday, June 08, 2012 - link

    But at least include Mushkin in the benches, after all that's the cheapest SSD out there. This would give a better picture of $/performance. Reply
  • Kristian Vättö - Friday, June 08, 2012 - link

    We don't have any Mushkin drives in our labs. I have asked Mushkin for a review sample but I have yet to receive a reply. Reply
  • CeriseCogburn - Monday, June 11, 2012 - link

    I hate to say it but "good !" - that's what keeps their asynchonus prices so low. :-) Reply
  • Belard - Friday, June 08, 2012 - link

    Considering the history and being a favorite, I think the Intel X25-M G2 120GB should be included in the benchmarks. So many of us can track the improvements and see if its a good time to upgrade or not.

    The G2 still does pretty good for its slow-interface, since its not a SF drive.
    Reply
  • Kristian Vättö - Friday, June 08, 2012 - link

    Bench also works :-)

    http://www.anandtech.com/bench/Product/605?vs=126
    Reply
  • Belard - Monday, June 11, 2012 - link

    Thanks... Its still easy to forget that function is on the website. Reply
  • Assimilator87 - Friday, June 08, 2012 - link

    There's no point in including more than two, MAYBE three SandForce drives. One with synchronous NAND, one with asynchronous, and the Intel cuz it has a different firmware. They're all the same hardware with a different sticker. Reply
  • iceman98343 - Friday, June 08, 2012 - link

    when are you going to rereview vertex 4? new fw was released. Reply
  • UltraTech79 - Friday, June 08, 2012 - link

    Where are you guys getting these numbers? One place? The suggested retail price? The 256GB M4 is going for $0.70 per GB at amazon. Reply
  • Kristian Vättö - Friday, June 08, 2012 - link

    We used DynamiteDeals to hunt for best deals. However, the table is a bit outdated (the prices are from May 22nd). I know it should be more up-to-date, but the problem is that DynamiteDeals does not work for me as it's tied to one's IP address. Since I'm located in Finland, it only finds Finnish stores (well, there is only one it finds...). Jarred made the pricing table but in the end, Anand was the one who posted this article (it's been ready for ages, just needed Anand's final look at it). Reply

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