As much as I hate to say it, AMD has better gaming chips. Go with the 3200+, over the P4. The 6800gs may perform better than the 7600gt cuz its memory controller is 256 bit, and the 7800gt's is only a 128 bit. However, the 7600gt's core clock is 600mhz while the 6800gs's is only 485mhz. I'm only speaking specs wise, anyway. I'd go for the 7600gt because it has a good reputation, and the two cards are about the same price, with the 7600gt being more expensive by 5 dollars.