OCC has published a new review on the Gigabyte 9800GT

Great googly moogly! The Gigabyte 9800GT has some game. The little 9800GT is no doubt helped by the Zalman cooler that keeps temperatures down. I figured I might as well go for broke with the added voltage offered in the Gamer HUD and pushed the needle to 1.4 volts. The clock speeds kept scaling upwards until I finally landed at 787MHz on the core (up from 600MHz), 1075MHz on the memory and 1863MHz on the shader cores. These clock speeds are higher than any of the 8800GT video cards that Overclockersclub has tested and represents increases of 24% on the GPU core, 16% on the memory and close to 20% on the shaders. Not too bad if I say so myself. At this level of performance, there were nice increases in all of the benchmarks used. Why the comparison to the 8800GT? Because the 9800GT is the basically the same card.

Gigabyte 9800GT Review