Quote Originally Posted by aboron View Post
I'm using my old 8800 GTX and my new GTX 280 in this PC right now.

With IS, I have set up a second WoW profile that homes the followers on the screen they will mostly be living and the FPS is higher than when it's just set up with a single WoW profile. However, if you use PiP and swap them off this screen and onto the main screen their FPS is lower compared to the single profile method - since now they are trying to render cross-cards to get into that spot.
What OS are you running?

I say this because I run 5 copies of wow off a single IS profile and have zero framerate changes when I cross video cards. This was the case in Vista as long as I crossed HEADS of a single video card, but crossing p hysical cards caused huge performance hits.

Quote Originally Posted by daviddoran View Post
So, with ISBoxer, and windows 7, i should be able to use 2 video cards without my system lagging like crazy? I'm about to buy a new video card, im normally an nvidia fan, but the ATI Eyefinity appeals to me for a one monitor solution, but if I can just grab a GTX 275 or something, that would probably be better.
ISBoxer isn't necessary for this with Windows 7 and NVidia cards. I don't know if this works for ATI cards because I haven't dropped money on an ATI card in 6 years.