or maybe you can try this:
200x19=3800mhz
201x19=3819mhz
202x19=3838mhz
... ...
210x19=3990mhz
211x19=4009mhz

see how far this chips can reach?
and since this is deal with base clock, so have watch out other clock like HT link clock, CPU NB clock, DRAM clock.

This post has been edited by saturn85: Jul 15 2010, 01:19 PM

i think go back to stock setting first, then only try to unlock.
because after unlock, the overclock ability of the chips is different already.
but what motherboard you are using?

maybe not the same.

"With ACC turned off, the X3 720 ran Prime95 for an hour at 3.3 GHz before we shut it down (3.4 GHz would crash almost immediately). Using the same voltage and 16.5x multiplier, we tried the same thing with ACC enabled and all four cores cranking. It didn’t take long at all for that fourth core to spit up an error, forcing us to scale back to 3.2 GHz for a stable run."

source: http://www.tomshardware.com/reviews/unlock...-ii,2273-3.html

another example: http://www.tomshardware.com/reviews/phenom...950,2617-3.html

haha, get SB710 or SB750 motherboard.
the new SB850 motherboard, don't know still got ACC function in it or not.

i see, thats great. because last time don't know read from where, say amd already take out the ACC function from the SB850.