Ok... I tweaked around with this setup and actually got it to run but not stable at 4.0 Ghz... the real secret lies in the voltage... I was afraid to go too high so the most I was putting on it was 1.450 but when I ran it up to 1.500v it ran and is running stable at 3.6 Ghz. Using 9x multiplier at 400 Mhz. I really diddn't have to change anything else although my memory has gone up to 1600 Mhz with 1333 sticks...??? Oh and with the NZXT Panzerbox and the Tuniq 120 cooling tower my temps are steady at 34C!!!