I have saved up 400.00 or so dollars to upgrade from my 7900gto which one would be better?
Easily a 8800GT. -It has near to equal performance of the $320-$400 512MB/1GB 2900XT and $500+ 8800GTX. -Its $50-$120 cheaper. -You can spend the extra cash on Crysis ;).
My God, don't think one second, 8800GT. The Radeon HD series is such a huge disappointment. People used to state that on paper, the Radeon HD series should be better. If you look more closely at it, it fails, miserably. The shader clocks are only as fast as the core clocks. Honestly, you will be loads happier with the 8800GT, I would go for eVGA if I were you. Buy the standard clocked one and you can flash the BIOS to the SSC version. (a big overclock, saves you like 50 dollars instead of buying the SSC) and as long as the cooler is the same there is no risk, and it is ;)