Graphics card for hd video and 3D rendering (p5k + e4500)

[ArtificialSquare]

What would be good choices for p5k mobo + e4500 cpu graphics card if I'm going to use it for hd video processing and 3d rendering.

Thank you very much

 

[ArtificialSquare]

Forgot to mention that I need hdmi and dual display. Also I can consider crossfire solution.