Just changed out my 3.2ghz p4 for a 3.4ghz prescott, oce'd to 3.6ghz with ram @ 1:1 then ran 3dmark of and get a max of 11,150.. before I changed processor I was getting 13,950 average.. sometimes over 14k.
Specs..
3.2ghz p4 @ 3.4ghz (before change)
Now 3.4ghz prescott @ 3.6ghz
XFX 6800 Ultra (AGP)
512mb Corsair XMS 3200 LL Pro
Don't see how jsut changing the cpu can cause this