I am thinking of getting a 6800GS or 7600GT. which one is better? one is 128 bit and the other is 256 bit. does that make a difference in performance. i am upgrading my dell my powersupply is 305 watts 18 amps on each rail. it should be able to handle the 6800GS but can it handle the 7600GT.
6800GS
http://www.newegg.com/Product/Product.asp?Item=N82E16814130271
7600GT
http://www.newegg.com/Product/Product.asp?Item=N82E16814130283
6800GS
http://www.newegg.com/Product/Product.asp?Item=N82E16814130271
7600GT
http://www.newegg.com/Product/Product.asp?Item=N82E16814130283