Matrox RT.X2 - Realtime HD Video Editing
 

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