So I installed Windows 7 x64 bit. 8g of ram and a Q9550 cpu. The default video card in the box is a Gforce 8600 OTC. I can 5 box all on one monitor and not have any issues worth complaining about other than screen real estate being used up. So I hooked up a second monitor and moved some of the windows there and it brought the frame rate to its knees. From 30-45ish to 10 or less. Even if I only had two instances of WOW going, one on each monitor the FPS dropped to 10 or less. So I tossed in a second video card. A Gforce 7900GT and hooked the other monitor up to it and got the same results.

Im scratching my head on why it would do that with a second video card installed as I can see a single card spliting its resources in half. The only other thing I can can see to blame is Windows 7. Anyone else useing multipal monitors on one box and it all working fine? If so, how do you have it set up?