Not much worse than the GT, just got it installed. I may be able to squeeze a little more out of it. The GT is on a 4Ghz QX9650, the GS in on a 3.4Ghz Q6600...
Project : 5506
Core : GPUv2 Gromacs
Frames : 100
Credit : 480
-- 8800GT --
Min. Time / Frame : 1mn 19s - 5249.62 ppd
Avg. Time / Frame : 1mn 19s - 5249.62 ppd
Cur. Time / Frame : 1mn 26s - 4822.33 ppd
R3F. Time / Frame : 1mn 26s - 4822.33 ppd
Eff. Time / Frame : 1mn 28s - 4712.73 ppd
-- 8800GS --
Min. Time / Frame : 1mn 27s - 4766.90 ppd
Avg. Time / Frame : 1mn 27s - 4766.90 ppd
Cur. Time / Frame : 1mn 28s - 4712.73 ppd
R3F. Time / Frame : 1mn 28s - 4712.73 ppd
Eff. Time / Frame : 2mn 20s - 2962.29 ppd
Edit: Shader clock 1800 on the GS and 1900 on the GT...
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