Hitachi OEM higher Xbench than Momentus XT?

Discussion in 'MacBook Pro' started by oplix, Aug 25, 2010.

  1. oplix macrumors 65816

    oplix

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    New York, NY
    #1
    I recently had my computer serviced and they replaced my seagate drive with a Hitachi. I ran Xbench and it got a 49. 5400rpm drive.

    I've ran Xbench on my seagate Momentus XT 7200rpm drive and used to only get 37.

    Why is the hitachi which is a slower drive getting higher scores?
     
  2. Intell macrumors P6

    Intell

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    #2
    The XT doesn't do good in benchmarks. It's because it learns from the users' actions and caches the most accessed files. When it's benched it's just a regular 7200 RPM Seagate drive. It's still a very fast drive.
     
  3. alphaod macrumors Core

    alphaod

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  4. oplix thread starter macrumors 65816

    oplix

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    #4
    Ok but that doesn't explain how a 5400rpm hard drive beats a 7200rpm hard drive.
     
  5. AlphaDogg macrumors 68040

    AlphaDogg

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    #5
    Amount of cache.

    Edit: Oops, just realized that the 4gb in the Momentus XT is the cache.
     
  6. Intell macrumors P6

    Intell

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    #6
    Was the XT brand new? I'm not sure but don't brand new drives double check their data for the first few hours or startups? If so that's what the XT could have been doing.
     
  7. cube macrumors G5

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    #7
    It's not a write cache, and this read cache is populated by an unknown algorithm.

    It also has a normal cache.
     
  8. oplix thread starter macrumors 65816

    oplix

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    #8
    Hitachi: SATA1, 5400RPM, 8/16MB Cache
    Momentus XT: SATA2, 7200RPM, 32MB Cache, 4GB NAND

    Hitachi Xbench: 49
    Momentus XT Xbench: 37

    Even if the Momentus didn't have the hybrid 4GB of NAND it should still outperform the Hitachi no?
     
  9. Intell macrumors P6

    Intell

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    #9
    Yes, the Seagate should (and is) still be faster then the Hitachi. The test results could be skewed and XBench is quite old. It isn't very good with newer drives.
     
  10. Philflow macrumors 65816

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    May 7, 2008
    #10
    Agreed. It's a weird result.

    Are you running the latest firmware on the XT? (SD23)
     
  11. RWil85 macrumors 6502a

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    Aug 2, 2010
    #11
    noob question and sorry to hijack thread..

    how do you check the firmware on your drive? (i just installed an XT two days ago and would like to check up on that..thanks!)
     
  12. ayeying macrumors 601

    ayeying

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    Yay Area, CA
    #12
    I think you mean "SD23"?

    Look in the System Profiler > Serial-ATA.
     
  13. dawsonj macrumors newbie

    Joined:
    Feb 6, 2011
    #13
    Yes I have same problem only I replaced my OEM with the Seagate to get more speed :mad:

    My friend installed a Seagate Momentus (without the XT hence no SSD) it has 16MB cache versus the XT's 32MB cache etc etc and his is the fastest.

    Who can recommend a better tool to test the speed with?
     
  14. tjb1 macrumors 68000

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    Pennsylvania, USA
    #14
    Stop worrying about it and just use the drive...
     
  15. thomamon macrumors 65816

    thomamon

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    #15
    I am getting the same awful results with XBench for this drive. The 5400 drive that came with my new MBP was registering much faster.

    Is there another tool to test it out?
     

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