how to determine which video card mac 3,1 is using

Discussion in 'Mac Pro' started by skiguy, Dec 17, 2014.

  1. skiguy macrumors newbie

    Feb 5, 2013
    Hi Everyone,

    I have a Mac 3,1 into which I just put in a gtx 660. It also has the x2600.

    When I boot up plugged in using the gtx 660 (there's no screen until I login), it shows the gtx660 card.

    When I boot up plugged into the x2600 I see the bootup and it shows the x2600 card.

    However, what if I have one monitor in one card and one monitor in the other? The mac still shows the x2600 but if I play a game which card will it use?

  2. h9826790 macrumors G4


    Apr 3, 2014
    Hong Kong
    Should be the card that attach to the monitor, but I am not 100% sure about this.
  3. MacVidCards Suspended

    Nov 17, 2008
    Hollywood, CA

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