Surprisingly the AA8XE got the highest performance in Doom 3; with the P5WD2 placing third by almost 8 frames per second behind the leader.
I am surprised by the difference in Doom 3 - I suspect it has something to do with the PCIe x16 implementation, as we were using the same processor, memory, video card and drivers for the other boards as well.
The P5WD2 was back in second place for Half Life 2, just over half a fps slower than the P5ND2-SLI for this benchmark.