With a base clock of 1033 MHz and a boost clock of 1098 MHz, compared to the EVGA superclock model (1046 MHz base and 1111 MHz boost) we tested prior to this, I expected the numbers for the GTX 660 Twin Frozr to be slightly less. In all of our 3DMark tests we saw number just slightly above the EVGA card. Even after going back and retesting them both a second time we had the same results. The only thing that could explain it is the better cooling performance of the Twin Frozr. It seems that the Nvidia Boost is boosting a little more on the cooler temperatures. This fits in line with what we learned at the Nvidia Press day for the GTX 680 launch as well. The boost is calculated on the fly and does take into account temperatures of different components on the card itself.