16X/8X, 8X/8X, or just put the dang old cards in the Mac already.

Discussion in 'Mac Pro' started by bob5820, May 24, 2010.

  1. bob5820 macrumors 6502a


    Jun 23, 2006
    35°0′36″N 80°40′45″W (35.0
    I'm adding a second GPU, an ATI 2600XT, to my 2006 Mac Pro. I already have an ATI 3870 in slot 1 (16X), and a USB/FW card in slot 3 (1X). My question which would be the better option.

    slot 1 (16X) ATI 3870
    slot 2 or 3 (1X) an USB/FW card
    slot 4 (8X) ATI 2600XT


    slot 1 (8X) ATI 3870
    slot 2 (8x) ATI 2600XT
    slot 3 or 4 (4X) USB/FW card

    I can't see the 3870 actually needing 16X, but I don't know that I'd gain anything by running both at 8X either. The other benefit of the first option 16X/8X is that it puts more space between the 2 cards which may help cooling. Any ideas or is it a case of 'six of one, half dozen of the other'
  2. Dzokayi macrumors member

    Mar 12, 2009
    Just put em in

    Neither graphics card can saturate an 8x lane.

Share This Page