Call of Duty, Return to Castle Wolfenstein
Call of Duty

Call of Duty is the first of our final pair of tests. Both use OpenGL and modified versions of the Quake3 engine. The GeCube and PowerColor trade blows at the beginning, but both trail the NVIDIA cards at the median setting. Less than 1% separates the Radeons.
RTCW: Enemy Territory

There were a couple of runs where the GeCube would post initial 1024x768 numbers up in the low 90s, so it was difficult to get performance figures. Once they levelled out, performance was a clear margin ahead of the PowerColor, indicating core frequency limitations.
It's nice to see a near linear performance drop-off when applying IQ enhancements.