I've got a 5850, is it worth running the game in DX11 mode? Or is that already turned on by default? I have to say that at the moment I've got all settings on High, running on an 18.5" Samsung at 1360 X 768 widescreen and with AA and Antisotropic on 4X and it doesn't look that amazing. I think that the trees are letting it down for me they look a bit pop out book esque.
I've just used the redeem code that came with the Steam Pre-Order and so far I can't seem to tell what it's actually unlocked but I'm yet to play the multiplayer, that's for tomorrow.