Mac Pro 3,1 + Three 30" Monitors?

Discussion in 'Mac Pro' started by ae35unit, Sep 18, 2013.

  1. ae35unit macrumors newbie

    Aug 31, 2007
    I've got an early 2008 Mac Pro that I'd like to drive three 30" monitors with. I'm not concerned with gaming performance and want three full-resolution screens (no mirroring).

    The monitors' interfaces: (1) DL-DVI and (2) DL-DVI / DisplayPort. The Mac Pro already has an AMD Radeon HD 6870 2GB installed and driving a single 30" monitor.

    So my question - does anyone know of a way to get the old MP to drive these monitors or is it time for me to put the old box out to pasture after five good years of service?
  2. ActionableMango macrumors G3


    Sep 21, 2010
    Your Mac Pro is fine with three monitors. Any card with three working output ports will work, but I don't know if your PC 6870 card has three working outputs. I seem to remember these are a bit weird about the ports as stated here.
  3. ae35unit thread starter macrumors newbie

    Aug 31, 2007
    I haven't seen any posts where someone has explicitly listed success with three full-resolution 2560x1600 30" monitors. Is there a list of multi-head video cards that are known to work in the Mac Pro 3,1 somewhere?

    I've Googled this up & down and somehow have managed to miss the answer somehow if it's out there. I'd really like to find a known / confirmed solution before I start down the path of actually upgrading things.
  4. Bwa macrumors 6502

    Jun 20, 2007
    Boston & San Jose
    Yes, you can drive 3x30 with the 2008. I did it for years, first with multiple 2600 cards and later with a single 5770 and two active dvi adapters. Performance will be fine for 2d work.

    I even ran four 30" and two 20"s with a pair of 5770s for a while.

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