I have the same video cards (older processor though) and run 4 monitors. I have 6 accts, and can run all 6 on two screens hooked to the GTX 260, but as soon as i put one window on either of the other two screens, the FPS on everything slows to a crawl. My second video card slot is only 4x electrical, and I'm not sure if that's my problem (I suspect it's part of it) but prior to the 3.0.2 patch, I got ~20 fps on all the alts, when run on the secondary video card.

What speed is your second slot? If you have a 8x or 16x electrical, it would seem that it's a vista limitation. I read that windows only renders 3d games on the primary video card, even if the video is being displayed on another video card's output.



Anyone know of a way to get more than 2 monitors running with decent FPS? I have different resolutions, so the Matrox Dual head to go wont work for me.