i get a little less than your stock score with my x2 3600 oc'd right under 3ghz, 7900gs SLI @ 540/800 and my ram running at about 850mhz.
its like 8200 or so.
so, i'd say your scores are close to where they should be. the overlcock score should be higher though, i think.
i'm pretty impressed with my setup, seeing how it compares to yours
what impresses me more is that my cpu scores higher (2151) than your first score(2064)....but obviously when you overclock it pretty much puts a hurtin(2693) my cpu score! lol not too shabby though for a 65 dollar cpu. whoa i just noticed your second cpu score is with your cpu at 3.6ghz?!? hmm...i say you have something bogging you down. i would think thatthe cpu score of a c2d @ 3.6 would be much higher than an x2 @ 3ghz...? you're about 500 points higher...a difference of 25%, so i guess thats reasonable. i would just think it would be 25% higher if it was at like the same speed. i dunno.
my rig kicks butt. wo0t.