Dual 5770 in First Gen Mac Pro?

Discussion in 'Mac Pro' started by cbrook824, May 11, 2011.

  1. cbrook824 macrumors newbie

    Joined:
    May 10, 2011
    #1
    I know that the 5770 graphics card works in the first generation Mac Pro, but can the machine handle two 5770 cards?
     
  2. Cindori macrumors 68040

    Cindori

    Joined:
    Jan 17, 2008
    Location:
    Sweden
    #2
    yes, but it will be bottlenecked very bad from the slot speed.

    two options:

    8x 8x, lose up to 20% performance on both cards


    16x 4x, lose up to 40% performance on second card
     
  3. igouroum macrumors newbie

    Joined:
    Feb 15, 2011
    Location:
    berlin
    #3
    bottlenecking

    I'm more concerned about the CPU bottlenecking than that of the pcie slot..
    Will any type of recent medium-high-end graphics be heavily bottlenecked by the cpu and pcie slot?
    I'm a moderate gamer... I have a 1920x1080p display and i like playing games like crysis 2 and other graphic intensive games.
    How will the 5770 perform in those games with the two dual core "woodcrest" cpus?

    thanks

    mark
     
  4. interslicer macrumors member

    Joined:
    Oct 14, 2010
    #4
    the 5770 is pretty good. its not mindblowing but its enough to play games at a high setting.

    as far as i know, in osx having dual gpus doesnt help aside from supporting more monitors. for instance one card will not increase performance on a monitor connected to another card.

    in windows you can link them in crossfire which would increase performance.
     

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