Another important aspect to note about SLI, dealing specificly with WoW. From what I have read, because I have an SLI-Capable setup, is... SLI does not play well with WoW, and a lot of people tend to agree, Hell I only get 35-40fps in a city (wich isn't too bad I guess) So I just use the other video card on the other monitor (I think it works like that at least...), but you never know nVidia may release a driver to fix it - still you can't use 2 monitors as stated previously, wich blows unless you have really big monitor.