Actually the P4EE peforms a bit slower in games compared to an Athlon FX 53, and sometimes FX 51 which are faster than any Athlon 64, but pretty sure that this CPU bottlenecks it for real, but still allows even in such situations to increase the eye candy and having enjoyable fps, in some games the performance increase is huge, in some others is not that much.
I would not change of motherboard cause I will lost memory performance, it doesn't affect much in gaming cause I tested my older videocard on an ASRock motherboard, and the games performs similarly when that card was here, but they load slower.
The ASRock motherbard with PCI-E doesn't support Dual Channel and even though It would not hamper the gaming performance that much, (10% or less), in general bandwidth intensive applications the impact can be as high as 55%.
I've RMAe'd this videocard cause is overheating like crazy, I had to put a deskfan to blow air on it to keep it at 84C, if it goes higher than 85C will freeze my PC. Having a two fan cooler and a TEC system, doesn't even keep this Card under 70C like GeCube advertised.
I'm not the only one with this issue, seems that I found 2 more guys with the same problem, once they received their replacements, they worked in the range of 60C-70C which is nice. I'm the unlucky one now.