Installing 6870 into Mac Pro

Discussion in 'Mac Pro' started by loganxw, Mar 1, 2011.

  1. loganxw macrumors newbie

    Joined:
    Feb 26, 2011
    #1
    I installed a new xfx 6870 into my mac pro so that I could use it for windows under bootcamp. Everything is fine, it installs great and runs perfectly. Yet the moment I boot into my osx under my other card (which runs great) the system then will not see the 6870 when I return into windows. It only recognizes the mac card. I tried to disable the mac card under windows, and yet same thing. Anyone come across this problem?
     
  2. Hellhammer Moderator

    Hellhammer

    Staff Member

    Joined:
    Dec 10, 2008
    Location:
    Finland
    #2
    Is your monitor connected to the PC card when you boot into Windows? It should use the GPU that has a monitor connected to it.
     
  3. loganxw thread starter macrumors newbie

    Joined:
    Feb 26, 2011
    #3
    Yes

    When I boot into windows, the monitor is connected, but when into windows, it says ati card not recognized... That is only after I go into Mac OSX with my mac card. Then I try to come back to windows using my pc card. That is when I get the error. I don't get it when I install the pc driver for the ati. If I never go into mac osx, then I am good to go. The moment I switch over once...Boom, failure.
     
  4. mclinger macrumors newbie

    Joined:
    Apr 30, 2011
    #4

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