I currently have a C2Q Q6600 based system that has been giving me nothing but problems (freezing, hard drive errors, etc). I have decided to replace my CPU/RAM/Motherboard, RMA my current one, and try to sell my whole system (I have 2 x 9800gtx's, so I might just put one in, sell it, and use the other one until I find more money). I am looking to pay around $500 (roughly, but south of $600) for it. I would like an SLI capable board, but it is not an absolute requirement. I'm not sure if I can fit a 920 in my budget, but would love to if possible. A 860 or 750 seemed doable relatively easily. Also, an Intel processor would be preferred.
EDIT: I just realized I never said what it was for! I do play games, but am by no means a hardcore gamer (at least not one with a limitless budget!). I don't really do rendering, etc, so the primary use would be gaming.