i got the bfg 6800gs agp and im pretty positive on the purchase, it was a good choice because u can over clock it to equal the 7800gs which is like $75 more. stock was 370/1050 and i have it overclock to 415/1150. trying to fine tune the pipelines to 16 with rivatuner.
i can get medium high settings on pretty much everything.
just as long as u have some good cooling blowing on it or even upgrade to the zalman vga fan our fine.