Even with the GeForce 7800 GTX X2 in SLI, you're only getting another 15-25 FPS in high resolutions. But, like they say, it's not all about frame rate anymore. However, how many games are designed to reep the benefits of SLI? IMHO, as of this point in time, it's not worth it. Hell, I can get 50-60 FPS in HL2 with everything on high, AA disabled at 1280x1024 with my ATI Radeon 9800 Pro. I just got my GeForce 6800GS!!! Man it is HUGE. it's like.... 3/4 the size of a keyboard. It's really heavy. I think I'm going to have to stretch some cables/wires in my case to fit it in there, lol.