Question My CPU is not cooling

[Andrew0760]

Hi everyone, today I built a PC and I immediately noticed that the CPU is not cooling. On the desktop it is around 80 degrees but while I play it drops to 65 or 70 degrees. It is a ryzen 7 5800x with an arctic 36 as a heatsink. As a power supply I have an nxzt c750 80 plus gold. I tried to disassemble the heatsink, clean the thermal paste and put a smaller grain of rice but nothing changes (I removed all the plastic). I bought a liquid heatsink that should arrive in the next few days, but I'm afraid it won't work anyway. What could be the problem? Thanks everyone

 

[boju]

That cooler should be sufficient. See video to check if you've installed it correctly.

View: https://youtu.be/2xCa9_zEq7s?si=cTdDgW83w0jFocyL


Use Core Temp to check cpu temp. I think what you're seeing is correct and cpu probably throttling to slower speeds when you see temps drop while gaming.

What case have you got and does it have intake and exhaust fans? And how are they configured?