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What do I need to support two 30" monitors at max resolution?
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1) A very big desk
2) Good eyesight, because these things are so large you'll need to sit back a bit for them to fit into your field of vision
3) You need two plugs out of a video card with dual-
link dvi. While I've never read of anyone doing this, I assume you can use one video card to run them.
4) Despite (3), since you're obviously not short of a penny to be able to buy two 30" monitors, you might be better off getting two good video cards - one to run each.
To do this smoothly, get a motherboard which has two (sometimes called dual) PCIEx16 slots... You can then put a PCIEx16 video card into each, and have one video card per monitor.
While I'm
not recommending this particular product (because I don't know anything substantial about it),
this motherboard is an example of one that offers two PCIEx16 slots