Hey, i bought a MSI 670 OC edition yesterday. There is an outstanding difference comparing with a 6850 crossfire. Everything seems smoother, and im not talking about FPS, it is a different feeling... 45 fps ingame with the 670 seems like 60 fps in the crossfire. Also everything looks smoother in terms of quality. I love how it works for Physx. Batman (Max settings Dx11 Physx high) is REALLY enjoyable. Mafia II is lovely. The thing is in Borderlands 2 (1080, Max setings, Physx high) when a lot of action is going on (especially with 3 team mates) the fps go as low as 38 or so... its kinda annoying. The GPU usage at those moments are 60%~ so i figured that must be a driver problem. Sorry for the english!