If that Video card wasn't enough, I would suggest looking into WHY. I run an ATI 512 HD 2600 and work with Adobe products, 3-d graphics, Video, and game with my kids. Sometimes, I have multiple applications going while working with graphics and sure, it could be a bit faster at rendering at times, but all in all, it accomplishes the job.

I have to ask, what are you running that that card can't handle? Clue us in so we can clue you in.