I was looking for a good upgrade from my old video card. I didn't want to spend alot on a new card, since my old computer system is a AGP system and not the newer PCIE...and I didn't want to upgrade the motherboard and everything else.
I had heard great things about the 1900 series from ATI. I settled on the Sapphire 1950PRO AGP video card, and I'm sure glad I did. It may not play the newest games at the highest resolutions but it has served me well and on a cheap side. I didn't have to pay 300-600 bucks for a new video card and nor did I want to pay that much for a aging system.
On board the card has 256MB of GDDR3 memory. Nowadays cards come with 512, and even 1 gig of memory so this wouldn't be of concern if you are a die hard gamer. It is compatible with both Vista and WinXP, and ATI updates their drivers quite frequently. This is a DirectX compatible video card as well. It has dual DVI and TV out support for those that use it.
If you have a aging AGP system and want decent performance out of a video card, I would take a look at the Sapphire 1950PRO. It's has excellent value/performance.