First off, I would like to say, I run BF3 on my secondary rig (Phenom 955, 4Gb, GTX 460 WD Caviar Black) and I have no issues what so ever (save the rare crash).
But on my main rig (i7 920, 6Gb, GTX 560 (2 in sli), WD Caviar Blue (fairly sure)) and single player ran beautifully, and i can...