Best card for video editing

[ClearH2O]

A customer is wanting a high end video card for video editing that can support 2 dell 2405FP monitors. He has a Dell GX270 w/ AGP slot. He is looking at the 6800GT and 850XTPE. Is one or the other better for video editing? Sorry if I didn't include enough info.

 

[PRIME1]

A customer is wanting a high end video card for video editing that can support 2 dell 2405FP monitors. He has a Dell GX270 w/ AGP slot. He is looking at the 6800GT and 850XTPE. Is one or the other better for video editing? Sorry if I didn't include enough info.

The dual monitor support on the 6800GT would be better. Although most video editing software relies mostly on the CPU to do the encoding.