i have
Asus M4A77 MotherBoard
AMD Athlon X4 640 3GHz
Nvidia GTX 460 768Mb (From Palit)
4Gb RAM (cant remember the speed but it's DDR2 memory)
250Gb HDD (cant remember what that was... mayby samsung...)
my friend got me the leaked version of crysis 2 so i tested it out and it's good looking game that runs smoothly on this rig (medium spec 62 FPS alltime, high spec over 30 FPS, resolution is 1440 X 900)
i will buy this game after i got my car fixed first

Great... my rig is better but not by a ton, and I run in 1920x1080. Guess the demo will tell me for sure whether I need a second 460 to SLI. Of course, I have an OCed 1gb card, too.