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Overclocking Potential

We tried to overclock our EVGA GeForce GTX 680 SC Signature 2 with the Power Limit set to the maximum of 125%.

We only managed to increase the base GPU clock rate by 65 MHz and the memory clock rate by 760 MHz.

The resulting frequencies were 1163/1228/6968 MHz.

That’s not much of overclocking for an original graphics card. But the frequency gain is rather high compared to the reference GeForce GTX 680: +15.6% for the GPU and +16% for the graphics memory.

The overclocked card had a 2°C higher temperature of the GPU and the speed of its fans increased by 160 RPM.

Increasing the GPU voltage by 100 millivolts didn’t help us reach higher clock rates, so we had to stop at those we had achieved at the default voltage.

 
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