Foxconn GeForce 9800GTX Review

Iria

"The good news is that the Foxconn 9800 GTX does indeed provide a nice bit of headroom above the stock clockspeeds of 685MHz on the GPU core and 1100MHz on the memory. So if you look at the final results as a percentage, the overclocking results are pretty impressive. The increase on the GPU core came in at 152MHz, or about 18.5%, and the increase in the memory speed amount came to 116MHz, or just over 9%. The performance potential is there, you just have to go look for it. At this point, Nvidia's driver package does not allow for the fan speeds to stay at 100% when manually changed. Having tried several utilities to do this, the results just did not stick. So maximizing the overclocking capability will mean requirig that driver issue be resolved."
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Source: OCC