This is pretty easy--Turn off all thermal junk in bios and disable turbo.
Change EOCP to 1866mhz(mobo will auto tune bsclk HT link and NB)
Reduce cpu multiplier to 17.5x to get to 4000mhz
Increase NB and HT link volts by 3 times up arrow when selected in bios.
Then increase CPU to =.10 and RAM to 1.65volts
Increase remaining volts by 2 or 3 (vtt..etc) times on up arrow when selected in bios. I do this with a Hyper 212 with 2 fans and a front and rear system intake. Combined with a Crucial M$ 120gb this thing screams.
See the CPU ID screenshot link above to see clock speeds..etc.