Im sort of confused on this matter. The net has conflicting answers as to the real answer to this question. I know that a DX10 card can play a DX9 game. The question tho is, does it nativly support DX9 or is it via a software layer or "emulation". If its the later, could this not be atributed to a loss in performance while playing DX9 with a DX10 card? This is even more confusing when you consider Vista. Maybe its Vista that has these issues and not the DX10 card itself. Anything to clearify would be great.