A core of my cpu causes weird problems
A core of my cpu causes weird problems
Hi, I see you've got a curious situation here. Your i7 5820K paired with an Asus Rampage V board has been reliable for years, but now you're experiencing some odd behavior when using all cores. The flickering Chrome tabs, unresponsive EA Origin, game glitches like character falling in Rainbow Six Siege, and lighting issues in games suggest a possible core-specific problem. You mentioned suspecting the fourth core after overclocking it to 4.3 GHz at 1.28V. Could be that imbalance or thermal stress is affecting performance differently across cores. What do you think about this?
You tested stability with various applications and noticed similar problems when disabling the overclock. Re-enabling the core didn’t resolve the issue.
I performed an overclock today. I run AIDA64 and CineBench for stability checks, though those aren’t part of the main scope. About 2-3 years prior, my speed was around 4.1Ghz and I don’t use it often. Could this be an overclock issue? Also, could a core damage occur and still have other cores functioning normally?
A core damage can occur during an overclock, though it seems unlikely this happened in your case. It might have been that Core 4 struggled to sustain a strong overclock from the beginning. Processors are only tested for normal performance, so we can't be sure a CPU will ever reach a specific overclock level—it's like a chance event. Are you suggesting the core itself was the issue even at base speeds? Or did problems arise only after attempting the overclock?
Absolutely, even when operating at typical speeds, the fourth core still presents challenges.