[SOLVED] Only one core overheating on idle

[aljaz.bozicko]

Only one of cores in i5-8400 is overheating on idle.

Image

Any ideas?

Till now:
Installed ParkControl
Using Cooler Master V8
Reapplied the thermal paste.

Roommate suggested it might be a bad sensor, but it is something I cant check. I dont exactly like that.

 

[PC Tailor]

Welcome to the forums my friend!

I'd sooner suspect that is a faulty sensor. Generally the core will throttle before it reaches that temperature.
If it was prolonged exposure to that temp, you'd also expect damage and probably shut downs.

But 1 core being hotter than the rest is normal as in simple applications, it may only use one core.

 

[aljaz.bozicko]

I'd sooner suspect that is a faulty sensor. Generally the core will throttle before it reaches that temperature.
If it was prolonged exposure to that temp, you'd also expect damage and probably shut downs.

Sounds reasonable, if computer isnt capable to run on such temperature without self-preservative shutdown, then error on sensor sounds reasonable. I dont experience shutdowns or at least they are extremely rare.