Is 100 Mbs read and 100 Mbs Write in Blackmagic Disk Speed Test

Discussion in 'Mac Apps and Mac App Store' started by waloshin, Aug 14, 2013.

  1. waloshin macrumors 68040

    waloshin

    Joined:
    Oct 9, 2008
    #1
    Is 100 Mbs read and 100 Mbs Write in Blackmagic Disk Speed Test good for a laptop? Not a ssd just a regular 2.5" harddrive.
     
  2. cledet macrumors regular

    cledet

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    Mar 26, 2012
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    San Francisco, CA
  3. AppleDeviceUser macrumors 6502

    AppleDeviceUser

    Joined:
    Jan 7, 2012
    Location:
    Canada
    #3
    I am getting 325MBs write and 400MBs read however my system is slow right now normally they are both at about 500MBs. I do have 512GB SSD so that could be why. I think your speed is not bad considering it's a HDD, my mom has a 2011 MacBook Pro and it's about 50Mbs read and write.
     
  4. thekingofnerds macrumors regular

    Joined:
    Jun 26, 2013
    #4
    That's actually quite good for a laptop HDD. Generally they are closer to 60-70MB/s.

    I know the crap one that came with my mac mini only gets around 40-50. It's almost too slow to use as a media drive even.
     
  5. MathBunny123 macrumors regular

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    Oct 19, 2012
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    Toronto, Canada | Sibiu, Romania
    #5
  6. ArchAndroid macrumors member

    ArchAndroid

    Joined:
    Aug 26, 2012
    Location:
    London, England
    #6
    Thats actually a really good score for a HDD. When I ran that test with my WD Blue 750GB HDD, I was getting around 80-90MB/s. The more you fill it up though, the slower it will become.
     
  7. dusk007 macrumors 68040

    dusk007

    Joined:
    Dec 5, 2009
    #7
    It will get slower though as you fill it.
    Innermost tracks on the spinning disk are about 50-60% of the speed of the outermost tracks. Fill it up to 80% and you will be at 60 MB/s. That has nothing to do with fragmentation just that a HDD starts writing on the long outer tracks and works its way inward as it fills up.
     

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