Running 3 Monitors with GTX 285 and GT 120, which one is primary?

Discussion in 'Mac Pro' started by 3587, May 22, 2010.

  1. 3587 macrumors 6502a

    Mar 23, 2008
    I'm running three Apple Cinema Displays... I have two cards installed, the GTX 285 in Slot-1 and the GT 120 in Slot-3, which card is primary when it comes to gaming etc? How can I tell?
  2. lemonade-maker macrumors 6502


    Jun 20, 2009
    Slot 1 should be primary if they are apple cards. You can tell by which screen is primary by which shows the gray screen at boot up.
  3. 3587 thread starter macrumors 6502a

    Mar 23, 2008
    It is. Great, thanks!

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