3870 X2 1GB on a 2007 Mac Pro in Windows?

Discussion in 'Windows, Linux & Others on the Mac' started by Og Oggilby, Apr 6, 2008.

  1. Og Oggilby macrumors regular

    Joined:
    Aug 27, 2005
    Location:
    Boston Area
    #1
    Is it possible to run an ATI 3870 X2 1GB as the only video card on a 2007 mac pro if it is only used as a Windows machine?
     
  2. Tallest Skil macrumors P6

    Tallest Skil

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    Aug 13, 2006
    Location:
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    #2
    I believe that you have to have an OS X card to boot into so as to be able to get past the EFI bootloader and get to Windows. It's possible to use a 3870 x2 in a Mac Pro, I just think that you have to have an OS X card.
     
  3. Og Oggilby thread starter macrumors regular

    Joined:
    Aug 27, 2005
    Location:
    Boston Area
    #3
    Thanks for the quick reply. So I could pick up a 7300GT (I have the 1900XT) and run it with a 3870?
     
  4. Tallest Skil macrumors P6

    Tallest Skil

    Joined:
    Aug 13, 2006
    Location:
    1 Geostationary Tower Plaza
    #4
    I'm fairly sure that would work. Mind, I don't have a 3870 x2, or a Mac Pro for that matter, but Mercurial Oxide runs one in his (2008) and I don't think that he's had much difficulty...
     
  5. pipomolo42 macrumors member

    Joined:
    Aug 29, 2006
    #5
    Hi,

    For your info, I have a 2006 Mac Pro with a PC only 8800GTS card, and it works fine as a Windows/Linux machine.

    You might want to keep a Mac OS X installation somewhere, to be able to do firmware updates, if any is available.

    1/ using a EFI/Mac OS X card, install rEFIt, and configure it to boot your legacy OS first
    2/ remove the EFI/OS X card, install your PC only card.
    3/ reboot. The screen will stay blank during the EFI phase, but the PC vgabios will get executed once rEFIt boots the bootcamp EFI App

    You can then chainload to a BIOS GRUB or LILO, to have a second boot selector, to choose among your different BIOS based OSes

    If a firmware update is available for your machine, just plug the EFI/Mac OS card instead of the PC one, and reboot to Mac OS X through rEFIt's menu
     

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