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So, what do we have? The graphs show that we profit most from overclocking the GPU from 400MHz to 450MHz. Increasing the graphics memory frequency to 900MHz is advantageous, too. After that, there is no perceptible performance gain from overclocking. A few extra fps can be written off to the measurement error. Our verdict is that overclocking the graphics memory in GeForce FX 5900 cards above 900MHz doesn’t practically bring any performance gains: the accompanying growth of the memory latency negates the effect of higher clock frequencies. So, people who are into overclocking should pay more attention to the GPU rather than memory. You should also keep in mind that the latency depends on the card’s BIOS version. Thus, graphics cards with different BIOS’s may show somewhat different results.

Now, let’s turn to traditional tests.

 
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