I agree with Hank. A sing

I agree with Hank.

A single duel head card is better by far.
Two cards, two drivers. Itis asking for conflicts. The computer gets confused enough with Windows operating system let alone extra drivers.

Depends on your editing system and if uses the video cards GPU. I think most of the “up market” one’s do – hence better background rendering and “live” transitions. I believe the latest verion of edition suggest you have at ” least 256mg of video card memory.