1TB Fusion - Blackmagic Disk Speed Test

Discussion in 'iMac' started by tomnavratil, Oct 13, 2013.

  1. tomnavratil macrumors 6502a

    tomnavratil

    Joined:
    Oct 2, 2013
    Location:
    Litovel, Czech Republic
    #1
    Hi all,

    I've got my new iMac a couple of days ago so I decided to post results from the Blackmagic test on my 1TB Fusion drive as I assume many of you will use the same drive so we can share results and experience.

    My config:
    i7 / 780GTXM / 32GB RAM and 1TB Fusion Drive

    My write speed: 265.3 MB/s
    My read speed: 623.3 MB/s

    This seems alright for a hybrid drive so I'm wondering what results are people getting on this drive. This is after a couple of day's normal use plus installation of Adobe suite and a couple of games.

    1TB_fusion.png
     
  2. MrGimper macrumors 601

    MrGimper

    Joined:
    Sep 22, 2012
    Location:
    Andover, UK
    #2
    I would have thought that with PCIe flash storage now present on the 2013 iMac, the write speeds would be a bit higher.

    Others with the same setup can confirm or deny.
     
  3. Stageshoot macrumors regular

    Stageshoot

    Joined:
    Oct 2, 2013
    Location:
    Central UK
    #3
    Mine is

    27" i7 - 24Gb Ram - 1Tb Fusion - 780M Graphics

    Getting 315.8 Write - 644.5 Read on average

    [​IMG]
     
  4. Bear macrumors G3

    Joined:
    Jul 23, 2002
    Location:
    Sol III - Terra
    #4
    It all depends on which part of the Fusion Drive the reads and writes are being done from and to. If the write is going to the hard drive portion, of course it will be slower.
     
  5. MrGimper macrumors 601

    MrGimper

    Joined:
    Sep 22, 2012
    Location:
    Andover, UK
    #5
    But then it would be down to about 100 which is the average speed of a SATA III 7200 RPM disk I believe.
     
  6. WilliamG macrumors 604

    Joined:
    Mar 29, 2008
    Location:
    Seattle
    #6
    Not necessarily. I get just under 200MB/s read AND write with the Seagate drive from the late 2012 iMac. NOT running in Fusion.
     

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