Quote Originally Posted by Pocalypse View Post
I have dual GTX 260s on windows vista. The best performance I could get was disabled SLI, and connecting my two monitors to one graphics card.

I'm honestly not sure if the second 260 even does anything, I just enable SLI and use it if I'm playing other games.
I'm pretty much in your boat. The only reason I have a second GPU is so I can run 4 total screens.