Earlier drivers were not supported in Win7, even if you managed to install them. However I was able to install just the CCC over the beta WDDM 1.1 ones and it worked flawlessly. Overall these are good, however they still miss some features (like the xcode) or EVR support in MPC (or I have broke something in the settings, because in Vista I am able to accelerate nearly all the movie streams with ATi enabling EVR in MPC Home Cinema).