just to compare I have recently put a new PC togethor. I put a quad core AMD and a ATI 6870 HD gfx togethor. It seems very nippy to me, in WoW I have it on ultra settings at 1080P and its a solid 60fps, sometimes drops to low 50s but hell thats not bad. I reckon BF3 will be no probs on it. However undecided if to buy on Xbox or PC.

Tut tut MrGrumpy that should be a nobrainer

might get both