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The ASUS GTX 560Ti comes with a factory overclock from 822MHz to 830MHz, and while this seems to be a key marketing point from ASUS, it is a minor increase. However, ASUS includes an application to overclock the card more on your own, and my efforts resulted in almost a 120MHz increase in GPU speed. This simple overclock provided a nice boost in performance.
Full story at Big Bruin.