I recently upgraded my AGP-based Socket 775 workstation by buying a used Dell Optiplex GX280, which is a PCI-E based S775 machine. I posted my AGP card (nV 7600GS 256MB) on Cragislist for trade for a similar spec PCI-E and and got responses with a 6600GT and an 8500GT. I dunno which is the better trade. I like the lower power of the 8500GT, but the 6600GT looks like a slightly more powerful card. I don't do a lot of gaming but the i915 video on the GX280 is pretty glacial. Any opinions of, or even offers for, trade?