Very poor GPU performance with iMac Mid 2011 (i7) and Radeon 6970

Discussion in 'OS X Yosemite (10.10)' started by Czo, Oct 8, 2014.

  1. Czo macrumors 6502

    Joined:
    Dec 30, 2008
    Location:
    Debrecen, Hungary
    #1
  2. vista980622 macrumors 6502

    Joined:
    Aug 2, 2012
    #2
  3. ayeying macrumors 601

    ayeying

    Joined:
    Dec 5, 2007
    Location:
    Yay Area, CA
    #3
    That's not the integrated video card... since there is no integrated on that iMac.
     
  4. iHateMacs macrumors 6502a

    iHateMacs

    Joined:
    Aug 13, 2008
    Location:
    Coventry, UK
    #4
    On my iMac I got 93fps on Mavericks then 88fps on Yosemite.

    After the last couple of updates Yosemite is showing 92.25fps now.

    So no major difference for me
     
  5. Der Kommandant macrumors member

    Der Kommandant

    Joined:
    Sep 25, 2012
    Location:
    The Netherlands
    #5
    I think that Apple doesn't optimize their drivers for the iMac 2011 models as they used to. Since Mavericks the GPU performance has gone downhill. A few months ago I installed Snow Leopard and it was (and still is) much faster than Mavericks and Yosemite.
     

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