Techspot looked at the performance of the 7600GS.
In fact just recently Newegg.com ran a rebate on the BFG 3D Fuzion GeForce 7600GS which reduced its price to $60. Unfortunately that opportunity is now gone, but for a short period of time you could have bought two 7600GS cards capable of running in SLI mode for just $120, which is roughly the price of a single GeForce 7600GT.Nvidia GeForce 7600GS SLI Performance
If you were to buy a mid-range Nvidia graphics card today, what would you get? Currently a no frills version of the 7600GS will set you back about $95, while the average 7600GT card is ~$140. Because of the close price range and the potential of being able to put two GS cards running in parallel, then the question becomes which will deliver the best performance?