GeForce 8800GS was an unpopular product when it was launched. Nvidia simply injected a doze of 9-series (marketing) magic into it and, *poof!* 8800GS evolves into 9600GSO overnight. What changed? Just the name, same G92 core with 96 shaders running on 192-bit memory interface remained unchanged. But this time round, card makers are given more freedom in designing their own custom PCB, the amount of memory, as well as the clocks.
The official clocks for GeForce 9600GSO is 550/1375/1600 (core/shader/memory), which is exactly the same as 8800GS, yet slightly lower than the announced reference clocks of 580/1450/1400 earlier on. I guess this move will encourage partners to come out with more profitable overclocked editions.
Do note that Forceware 174.14 WHQL can support GeForce 9 series products as well as MCP78 chipset. The only difference is that Forceware 174.88 added in support for the 9600 GSO.
Page 1: Introduction
Page 2: Specifications Compared
Page 3: Test Platform
Page 4: Benchmark Scores