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.
I have an Emachine, ET 1831-07, Windows 7 home premium 64 bit. It came with an intergrated video card, nvidia geforce 7050, which wasn't strong enough for me to run some of my games. I purchased a new video card, JATON Video-PX498-TWIN GeForce 9400 GT 1GB 128-bit GDDR2 PCI Express 2.0 x16 Low Profile Ready Video Card. But that too, wasn't strong enough.
I'm wasting my time (and money) playing the guessing game trying to match my computer with video cards. I would appreciate it if someone could plase advice me and give me some direction on this issue. I will respond to any emails I receive. Thank you, Roger