Well I've got a Intel i7 and a ATI 6970, so spec wise I'm all right. But I heard that even with a higher spec PC the game ran badly on the PC. Will have to see what happens.
Nah you'll be more than fine. On my Athlon II X4 at 3.1Ghz and Radeon 5770 I get 30 - 50 fps at full HD. The other settings like view distance and such you need to play around with.