Hmm just got my new rig, Pentium D 3.0Ghz 2X2MB, 7900GTX, 1GB 533DDR2, no tweaking done:
3DMark = 5877
SM2.0 = 2616
HDR/SM3.0 = 2604
CPU = 1505
Not bad, but the CPU seems to be the one dragging things down, which I find a bit strange..
*edit, typo in the scores*