Another card to look into is the plain GF 6800. I'm not sure about price compared to the 6600 GT. Just giving you thoughts. The AGP version of the 6800 has the same number of pipelines as the 6800 GT and ULTRA, they are just disabled. There is a simple software patch that will enable the other four pipleines, giving you a 6800GT (minus some clock speed....overclocked is the same though). It's been a while since I read about this though so I'd do research in it before you buy, as I'm sure you will. I'm just giving you something to think about.

For those readers with a PCI-X version, sorry, this doesn't work for you.