Quote Originally Posted by Drysc
World of Warcraft, like any 3D game as far as I know, can be made to take advantage of video cards in SLI. Check your World of Warcraft program specific settings in the nVidia control panel, you'll likely need to change the setting from "single card" to SFR/AFR.

I believe this requires moving it from the recommended nVidia setting which may imply that any issues while playing the game in SLI will not be supported by them. I've never had any problems with it though. I think I use AFR1.
All news to me too!!

I'll favourite this thread - it's a question that's bound to come up again