It is, of course, common sense that ATI HD 4XXX GPUs do not officially support DirectX 11. However, is there any way to run DX11 on ATI HD4870? I want to try the recently released Crysis 2 Hi-Res pack which requires DX11 but my machine cannot run it. I google around and the straight answer is no.

My OS is Windows 7 64 bit.

Sounds a stupid question, but I would appreciate a solution even if it is not a stable build.