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Old Sep 18, 2013, 01:02 PM   #1
ae35unit
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Mac Pro 3,1 + Three 30" Monitors?

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?
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Old Sep 18, 2013, 02:39 PM   #2
ActionableMango
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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.
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Old Sep 18, 2013, 08:43 PM   #3
ae35unit
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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.
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Old Sep 22, 2013, 08:27 PM   #4
Bwa
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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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