I have an old AMD Sempron desktop PC that I've got Ubuntu 10.10 installed on. Everything works great, but the built-in "S3 UniChrome Pro" motherboard graphics isn't the best.
The motherboard has an AGP slot, so I was thinking of picking up a very cheap dedicated graphics card from ebay.
Is there a minimum I should be aiming at to get Compiz working for example? I'd prefer a nVidia card, as that's what I have always used, but all opinions welcome.