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

Incompressible Sequential Write Performance - AS-SSD

Although we saw the 830 take a backseat to the SandForce based offerings in our compressible sequential write test, the roles are reversed in our incompressible write test. Most huge sequential writes are going to be incompressible in nature (e.g. moving a H.264 movie around) so these numbers are quite relevant.

Random & Sequential Read/Write Speed AnandTech Storage Bench 2011
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  • Out of Box Experience - Saturday, September 24, 2011 - link

    Compatability?

    As far as I am aware, Intel and Samsung were the only drives compatible with XP and every other OS out of the box

    Am I wrong on this point?

    I believe ALL other SSD's require Partition Alignment for compatability

    It would be nice to get an update to see if ANY newer 6Gbps are compatible with every OS out of the box like the Samsung 470 and Intel drives

    Is there a compatability list floating around somewhere Anand?

    A Google Search turns up no reliability issues from anyone who actually knows what they are doing either

    If you want to find hundreds of reliability or compatability issues, just visit the OCZ Forum or go read the Newegg reviews

    or go sleep it off
    Reply
  • extide - Tuesday, October 4, 2011 - link

    EVERY SSD should be 4KB aligned for best performance. Reply
  • Out of Box Experience - Wednesday, October 5, 2011 - link

    Intel and Samsung SSD's do not require end user alignment

    Only SSD's that do not have the offset in firmware require alignment
    Reply
  • kake - Saturday, September 24, 2011 - link

    I like your mic. Reply
  • sequoia464 - Saturday, September 24, 2011 - link

    Quite a bit more juice running through them than the other drives - is this partly from the 256 mb cache? Reply
  • tipoo - Saturday, September 24, 2011 - link

    Even the most power hungry SSD's don't require any additional cooling. It may look big on the graph, but that's still sucking way less power than most things in your system like the processor, graphics chip, etc. It just won't produce that much heat. Reply
  • sequoia464 - Saturday, September 24, 2011 - link

    Thanks, Reason I asked is that My Toshiba based Kingstons seem to run (at least to the touch ) cooler than my both Intels and Vertex2's. (not that they are hot by any means, just warmer).

    Probably the workload and usage that is at play here - now that I think about it.
    Reply
  • name99 - Saturday, September 24, 2011 - link

    Different people have different concerns.
    Yes, if you install this in a desktop box power is not an issue.

    If you install it in a laptop, the concern is probably not the thermal load but the maximum power draw. If your laptop is not specced to handle that, you'll find the machine crashing when you do a lot of back-to-back writes.

    Same thing if you hoped to use it in a USB enclosure, whether USB2 or 3.
    Reply
  • Jaybus - Tuesday, September 27, 2011 - link

    Probably a combination of things. Certainly, the DRAM is much larger than what is used by the other drives. Also, notice that this 512 GB version is being compared to 256 GB drives, so right off the bat its flash is taking twice the power as those it is being compared with. This was mentioned in the article. Samsung has not yet supplied a 256 GB version for testing. So I doubt it is a controller issue. Probably just the fact that it has twice the flash. Reply
  • infini - Saturday, September 24, 2011 - link

    I don't think Intel is the king of reliability with the 8mb problem of the 320 series. Beenthere can you provide a link with compatibility and reliability problems of Samsug drives? Reply

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