Hey all, i'm not by any means new to computers; but I have never actually worked with SLI before and I only no a small amount about it. I am upgrading my computer from an old P4 1.5Ghz (yeah laugh it up lol) to an Athlon 4200+ X2. Along with the processor I obviously need an SLI compatible mobo, PSU, RAM and video card. Ok heres the question: do only certain nvidia card support SLI? I am only getting one card for now, but how do I know which cards can be connected to others via SLI