So, i have modded my vc to 561/1020, but when i was running AM03 the score results were less than previous frequencies...is it possible? my card is stable with this sets, i did not flush it, only use coolbits, and then select the nv manager to change the sets to optimal.

Thanks in advance!

Stable is, as stable does.
Did these OC settings pass the test in nV?
Have you gotten better fps?
How is the temp?
What ver driver?

It's not hard to fry the gpu. :hotouch:
Normally, it's recommended to increase in small increments
until it fails the test, then backing off the settings 5 to 10.
G'Luck

yes, the test passed nV, and my temps are at normal values..driver forceware v81.94

i have a 6600GT, and i get better perfomance not overclocking it whatsoever.

I was just testing a 6600GT and overclocking it to 550/1100 made almost no difference in performance.