I'm in a dilemma. I can't choose between the HD 5850 or the GTX 470. The 5850 has less heat problems, but the GTX 470 has better PhysX performance. I really don't want a bunch of heat, but I do want PhysX and the likes. If someone could help me make this decision it would be really nice. If it helps, I play Source games, BF2, and plan to play Mafia 2, Crysis, BFBC2, and possibly MW2.