Trusted Reviews looked at the Matrox RT.X2 - Realtime HD Video Editing solution

Five years ago, despite the growing ubiquity of FireWire, if you wanted
to edit video seriously on your PC you were still better off with dedicated hardware. But times have changed, and dedicated hardware just hasn't been able to keep up with the burgeoning power of more general components like the graphics card and CPU. So most video editing companies have moved as many editing tasks as possible over to software, in order to take advantage
of faster GPUs and processors.

Matrox RT.X2 - Realtime HD Video Editing