YO..
you need to wire mod for 1.7 volts.. not higher...i had a 1.6 that sang at 175 mhz
now it crawls at 137 mhz (poor me i know)voltage was too high!!
you also have the later version of this board(1003bios)
you only have a 1:1, and 3:4 mem ratio wher auto =1:1 and 1:1=3:4
DISABLE onboard sound, but enabling onboard usb is fine
keep the usb voltage at normal
i ruined a vm w/ my memory voltage mod... it worked for weeks, then the board acted flakey(all that testing)
now that you are running @150 , you need to be absolutely sure your mem can run @200 fsb@Vmem default.
i think 1.7 is safe(actually a little higher if you swear by asus probe)
and it should get you to 150 stable
quake is kids stuff...prime is even whimpier..
if you can play serious sam, or moto cross madness 2,w/out issues, then you are real stable
they are both system resource taxing
not video card intense.