DX11 is pre-installed with Win 7, it is an update for Vista, and should come with any DX1 game (Dirt 2 would install in in Vista if it's not there, for instance).
It shouldn't, but anything is possible. I have a 5850 with Windows 7 and I run one DX11 game (Dirt 2) and a ton of DX9/10 games... and they all get along fine with each other.
DX11 is pre-installed with Win 7, it is an update for Vista, and should come with any DX1 game (Dirt 2 would install in in Vista if it's not there, for instance).
DX11 is pre-installed with Win 7, it is an update for Vista, and should come with any DX1 game (Dirt 2 would install in in Vista if it's not there, for instance).
Problem is dirt 2 is downloadable for me at steam and steam took so long to download up to 34% i just quit.....