I can overclock my cpu to 2.70ghz (1199) fsb without changing any voltages after that i gotta tweak the fsb and cpu voltages abit to get any higher. so after i tweak the voltages and set the fsb to 1333 for 3.0ghz which it was actually clocked at when i got it, it boots and seems to run ok but my sound crackles and the volume drops and slowly comes back up, i got a creative xi-fi titanium soundcard installed and it also seems to be the same if i use my onboard sound via usb headset 
anyone encountered this problem?

anyone encountered this problem?