Question about graphic card & about directx

[Skoshi Tiger]

CoD uses DirectX 10 features in windows Vista and Windows 7 and DirectX 9 in Windows XP.

Because DirectX10 is a subset of DirectX11 if your running Windows 7 or vista with DirectX 11 you just use DirectX11. When the developers decide to implement the DirectX11 only features you will need a DirectX 11 graphics card to access those features.


from Wikipedia
"Direct3D 11 runs on Windows Vista and Windows 7. It will run on future Windows operating systems as well. Parts of the new API such as multi-threaded resource handling can be supported on Direct3D 9/10/10.1-class hardware. Hardware tessellation and Shader Model 5.0 require Direct3D 11 supporting hardware.[32] Microsoft has since released the Direct3D 11 Technical Preview.[33] Direct3D 11 is a strict superset of Direct3D 10.1 — all hardware and API features of version 10.1 are retained, and new features are added only when necessary for exposing new functionality. This helps to keep backwards compatibility with previous versions of DirectX."
Cheers!