If you are going to do a lot of 3D work, I'd suggest GPUs from the past 6 months (not necessarily most recent, but close), with 2 Gig of VRAM or more. And make sure you update the driver from the GPU maker's website.
Thanks, Chris. I just got a Dell Inspiron 2020 All-in-One, but when I try to find out something about the GPU, I can't. The sound, video and game controllers only tell me stuff about the audio. Is the GPU something I need to buy along with the graphics card?