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Unlocking Phenom II 555BE

post #1 of 11
Thread Starter 
Hey guys,

I thought i would give unlocking the cores a shot, even with my Mobo's VRMs. I can get it ito Hybrid mode and the computer logs into windows fine, the only thing is, it runs fine for about 60 seconds and then freezes.

CPU-Z identifies the CPU as a Phenom II X4 550BE and as i said works fine for a short time, I'm hoping the reason it freezes is my mobo and not that the cores are defective?
 
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post #2 of 11
Have you increased the vcore? You may need slightly more to stabilize.

There is also the possibility you do have a defective core, hence the reason it has been sold as a dual core rather than a quad.
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post #3 of 11
Thread Starter 
yeah i tried increasing the vcore, but no luck, and as soon as I started testing it as both a quad and tri core it freezes up.

Owell, no matter!
 
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post #4 of 11
my 550 did the same thing crank the vcore to 1.35v set the cpu-nb voltage up one click from auto set your ram to 1333 or 1066 (you have the same ram as i did) and as soon as you boot in windows open msconfig go into advanced boot options set it for 4 cores and max ram then restart and now you should be able to run p95 and test for the most stable of the unlocked cores and disable the faulty one and then overclock from there.

i cant guarantee this as a solution its just what i did to solve the freezing issues

good luck
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valkyrja
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post #5 of 11
Well I've got the same cpu,unlocked fine(thats what i was thinking)And the i've oced it to x4 4.0ghz and then the problems with prime started mines needs 1.425v to be rock stable at the stock speed,you can try even 1.5v its safe if you have a good cooler,and remeber if you make it stable,the Phenom loves to be cool.As a x4 at 4.2 my cpu needs 1.5250voltssssssss and it works fine but the temps are idle 30C load 56-58 Try givin it 1.5v(only with good cooler)
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post #6 of 11
In my experience if it does not stabilize by 1.4v you more than likely got a true dual core, but i have to ask, did u enable ACC? sometimes that is the key to getting the unlocked core to work, if u did not, enable ACC and set it to AUTO.
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post #7 of 11
Stock cooling may a problem; the dualcore cooler isn't rated for the 125w (probably more) that your unlocked chip is goin got give out.

Boot into bios and monitor your temps for a little before doing anything.
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post #8 of 11
Due to cheap known-problem 3+1 phase on that motherboard I do not recommend unlocking on it; you may end up with a flaming paperweight on your desk if you continue (not immediately, but it's a possibility since an unlocked Phenom II x2 is high TDP and board max rating is 95W)

EDIT: I see you're aware about the VRMs and tried it just for teh lulz, and got instability. Well, unlocking is pretty much a shot in the dark. No guarantee that it'll work, and a lot of times the unlocked cores end up unstable. You could increase voltage in attempt to stabilize, but you'd be above the TDP rating and overvolting too if doing so and I don't recommend that.
post #9 of 11
another thing you can try is throwing acc into +12 on all cores i got my 555 to stabilize at 4ghz as a quad when cores 2 and 4 threw out past 3.8ghz it saved me from having to push past 1.4875. ive hit 4 as a quad now im going to try for 4.2 as a tripple
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valkyrja
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mini destroyer
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post #10 of 11
stock cooler no good for that,i had that very combo (see sig) forget the quads,aint going to happen..... takes the dual up to 4 for me

if your dead set,acc to auto and ec firmware to hybrid and there you go,i think it undervolted my 555 unlocked to begin with
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