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555BE unlocked to quad core but sudden off when around 55 degree - Page 2

post #11 of 13
You should try the same thing, test that is, with 2 or 3 cores and see if the problem happens. If not, then you may have 1 core that is no good, possibly 2, since they were locked. Unlocked cores can do some weird things if they are unstable. Unlocked cores do not act like an unstable overclock all the time. I have had unlocked cores that ran P95 for 12 hours strait with no problem, then the next day with same settings, crash within minutes on P95. Also remember to give it voltage because this is not an 80w cpu anymore if you have 2 cores unlocked. You are around 125w now and even more when OC'ed.

So my guess an unstable core or two.
post #12 of 13
The stock cooler that comes with a PII 555BE is not the same cooler as the PII 955. Get a aftermarket cooler before unlocking.
DT421
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CPUMotherboardGraphicsRAM
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DT421
(10 items)
 
  
CPUMotherboardGraphicsRAM
Intel® Xeon® Processor X3430  ASRock p55de3 AMD Radeon 7950 G.Skill RipjawsX 1866 
Hard DriveHard DriveCoolingOS
SanDisk Ultra Plus SDSSDHP WD 500GB Blue Enermax ETS-T40-TB Windows 10 x64 
PowerCase
BFG 1000 Watt CM 690 II Advanced 
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post #13 of 13
I have the same CPU and the non EVO version of the M4A88TD-M. I haven't OCd it yet but when I unlocked it to quad I also stressed it with a lot of the same programs mentioned here with no problems. I'm thinking maybe 1 of your cores isn't 100% stable. Also when I unlocked I was on stock cooler for all stress testing. I upgraded to the hyper 212+ in anticipation of OCing.
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