Agility 3 SSD a little slower than I expected

Discussion in 'MacBook Pro' started by whitehat09, Aug 11, 2011.

  1. whitehat09 macrumors newbie

    Jun 29, 2011
    I just installed a OCZ Agility 3 120GB that is running firmware 2.11. After installing I wanted to benchmark it and used AJA System Test using the following settings:

    file size - 1GB
    video frame size - 720x486 8-bit (default)
    disabled file system cache - checked (default)

    The resulting Read/Write speeds are 382.3 MB/s and 384.4 MB/s.

    This seems slower than expected, I've read threads where people see speed closer to 450 MB/s. Is there a way to tweak my Lion settings to improve this? Or it is what it is?

  2. kasakka macrumors 68000

    Oct 25, 2008
    You're going to get different results from different benchmarks because some use highly compressible data which the SandForce drives handle much better than data that can't be compressed.

    It's a fast drive, don't give a damn about test results. You won't see the difference in real use really.
  3. Prodo123 macrumors 68020


    Nov 18, 2010
    That's around the limit of SATA 3Gbps (384MB/s to be exact). Maybe your laptop doesn't support 6Gbps?
  4. dsio macrumors regular

    Jun 19, 2011
    SATA 3Gbps doesn't actually get anywhere near that high, my Vertex 3 on a SATA 2 bus peaked at 275MB/s.

    You need to up the frame resolution from 720x486 8-bit (default) to the maximum, then up the file size from 1GB to at least 4GB, or 8GB ideally. Run it again then and you'll get better numbers.
  5. whitehat09 thread starter macrumors newbie

    Jun 29, 2011
    @dsio: thanks, after changing the video frame size to 4096x2160 10-bit RGB (max) and file size to 8GB I observed read rate of 467 MB/s and write rate of 445 MB/s.

    Having never owned an ssd before this one I just thought it was curious that my speeds seemed slightly slower than expected. But I do realize that these are fast no matter what and am greatful for all your replies.
  6. macfan74318 macrumors member

    Aug 9, 2011
    Does the 2010 Macbook Pro support 6G in any SATA?
  7. dsio macrumors regular

    Jun 19, 2011
    Those figures should be right for an Agility 3, my Vertex 3 runs just around 500/520 or so in these tests, and the A3 is a small percentage slower.
  8. Weaselboy Moderator


    Staff Member

    Jan 23, 2005
    No... not until the 2011 models did SATA III (6G) appear.

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