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

    bob5820

    Joined:
    Jun 23, 2006
    Location:
    35°0′36″N 80°40′45″W (35.0
    #1
    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

    or

    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

    Joined:
    Mar 12, 2009
    #2
    Just put em in

    Neither graphics card can saturate an 8x lane.
     

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