Question Overvolted i3

[Rhaemond]

Hey guys. I used to have a 4th gen i3 that would constantly overheat and had idle temps of 38°...

I got it checked and the repairman told me that it was because of bad thermal paste and weak heat sink.

Is this true? Or could a bad PSU cause it? But then again, wouldn't a bad PSU also fry my other components if that would be the case?

Note: NEVER overclocked during its lifespan. I used it for 2-3 years I think before I upgraded my system...

 

[RememberThe5th]

Which heatsink?
Thermal paste usually lasts for around 5 years tho, they are made to bond between heatsink and CPU.
Im using stock copper slim heatsink from Intel, which were used by G3220, i3-4170 and Xeon aka i5-4570.

Download Hwinfo and run it into sensor mode, there should be saying Vcore, i think i've ran my I3 at 1.05V.

 

[Rhaemond]

Which heatsink?
Thermal paste usually lasts for around 5 years tho, they are made to bond between heatsink and CPU.
Im using stock copper slim heatsink from Intel, which were used by G3220, i3-4170 and Xeon aka i5-4570.

Download Hwinfo and run it into sensor mode, there should be saying Vcore, i think i've ran my I3 at 1.05V.

The stock fan's heatsink I guess. I didn't really understand the repairman, but I think I got the jist.
Any chance a bad PSU would've overvolted it? But then again, a faulty PSU should take out the Mobo and RAM first before the CPU right?

 

[RememberThe5th]

Its hardly that PSU can overvolt the CPU cause the voltages go first into VRM to get to the CPU which are controlled by motherboards in bios. Which can be auto or manually set.
What are the specs?
CPU-
Motherboard-
PSU-
GPU-