So my PhenomII 555 BE cpu is running stable at 4.0Ghz with a 20x multiplier at 1.475 volts. Obviously, this is not fast enough (if you have to ask why you don't understand.)
My motherboard BIOS has a million options for adjustments. I tried to increase the FSB to 205Mhz (with a 20x multi) and consequently had to max out my CPU VDD voltage to 1.500 and, although it does boot, Prime95 crashes. I also tried to just increase the multi to 20.5x with 1.500 voltage and FSB at 200Mhz and the same thing happened.
I realize most overclockers may not have pushed a cpu this far, so I need help from the "insane" on how know how to finagle every little BIOS option to push a processor to its limits. I've seen reports of Phenom's pushed up to 7.0Ghz, so I know it isn't impossible.
Isn't this one of the AMD processors with two locked cores in it? If you haven't already why don't you unlock the two cores and down clock it some. This would probably give you better results than clocking it over 4.0ghz. If you have already done this then I'm sorry for wasting your time with this post. And good luck! I'm not sure how to get over 4.0ghz but I understand the need lol!