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 Read Performance - AS-SSD

AS-SSD tends to post higher numbers than our Iometer sequential tests, and here we see Crucial break the 500MB/s barrier in read performance with the FW0009 update.

Incompressible Sequential Write Performance - AS-SSD

Write speed under AS-SSD actually fell a bit, the older firmware was 10% faster here.

Random & Sequential Read/Write Performance AnandTech Storage Bench 2011


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  • Carlu - Sunday, September 18, 2011 - link

    You self have recommended and the Intel SSD 320 have gain a lot of credit for it's reliability. Since this is debated i think you leave out Intels complete SSD disk is bad... and give the performance a to important role. No disk is useful if you loose the data on it... Reply
  • hoangcodo - Friday, December 9, 2011 - link

    You to help me with
    I bought Crucial SSD SSD 512 GB M4, yesterday is still attached to the SERVER received, read, save data normally but today it does not grease the machine up to store data, not to delete data. The way you see the fix on my answer helps, thank you.
  • alan1476 - Sunday, April 1, 2012 - link

    You can now get a 256gb Crucial M4 for 289.00 on Amazon, and the prices will drip fuether when OCZ releases their new Vertex 4. Reply
  • ljmichael - Sunday, June 17, 2012 - link

    After read the full information about Crucial m4 SSD, do you want to get it free? Now, AOMEI Tehc offers you a chance to free get this SSD. Read more details information about this event named "Share then Win" from
  • Scour - Monday, September 3, 2012 - link

    Anyone tested the GC with this FW? Reply

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