4th core problem

Aug 12, 2018
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I bought AMD Phenom II X2 550 CPU , unlocked into AMD Phenom II X4 B50 after i enable 4th core i went into issue after i open google chrome with couple tabs my PC freezes. I tried running "CPU-Z" stress test after 5 minutes my PC didn't freeze, but if i try "HeavyLoad" CPU stress my PC freezes.Thing that i know that's my CPU because i disabled 4th core and tried "HeavyLoad" and there was no freeze after some time. Is this voltage problem or something else, please help me.
Thank you

Specs.
AMD Phenom II X2 550 (AMD Phenom II X4 B50)
GA-MA74GMT-S2
GTX 760
8GB ram
450W
 


The reason those cores are disabled to begin with is because they are unstable. Just because you can unlock them does not mean they will function properly.