I don't have, nor want to download PCMark 05, but here's my X2 4400 @ 2.2 Ghz, and my X1900XT @ stock speeds:
5155, and here's my 4400 @ 2.6 Ghz, and X1900XT @ stock speeds:
5326. As you can see, overclocking your cpu doesn't change your score much with 3dMark (except 2001, of course).