What are next steps in overclocking Phenom II 555BE above 4.0Ghz.

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.

Please, if you can help let me know. And thanks.
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More about what steps overclocking phenom 555be 0ghz
  1. 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!

    to unlock the 2 locked cores http://www.tomshardware.com/forum/forum2.php?config=tomshardwareus.inc&cat=29&post=254737&page=1&p=1&sondage=0&owntopic=1&trash=0&trash_post=0&print=0&numreponse=0&quote_only=0&new=0&nojs=0

    would probably be a good place to start looking. not 100% sure but if you look i bet it's the same because there is only a .1ghz difference in the 550 from 555. best of luck.
  2. Already tried. It doesn't work on this cpu.
  3. Get liquid Nitrogen cooler, NB cooler, increase Vcore & Multiplier Oc again. up .. up .. up !
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