The default core and memory clock speeds for each card are as follows: 560MHz/700 MHz for the core and memory of the Asus EN7600GT, and a much tamer 400MHz/400MHz for the Asus EAX1600PRO. With similar components, lower clocks typically require less power and generate less heat, which makes these cards more compact and quieter as they employ smaller cooling solutions. To unlock their full potential, we used third party tools to overclock the core and memory speeds, while maintaining stability. The end result were a modest bump in speeds with the EN7600GT of 601MHz for the GPU, and 789MHz for the memory. Results were even more favorable for the Asus EAX1600PRO, where speeds of 513MHz/518MHz were attained - basically a 25% increase for both the core and memory.
The mildly raised speeds on the EN7600GT bumped its 3DMark06 performance over the X1650 XT. However, even an overclocked 7600 GT was no match when it came to F.E.A.R., as a 3 frame per second increase still placed it 17 fps behind. The more impressive gains were found, expectedly, on the EAX1600PRO. There we saw a 25% increase in 3DMark06, as well as a jump from 10 fps to 18 fps - nearly double - when benchmarking F.E.A.R. It brought game frame rates between the two Asus cards to much closer to a playable level.