The same thing was happening with my GPU so I underclocked and undervolted it to hell using msi afterburner and now instead of getting 85 C during gaming sessions it’s around 70 C. my CPU fan is always loud. i think the thermal paste is gone. I’m not willing to take my computer apart because where my computer is it’s really awkward and if it bricks itself i have the money to buy a new one. rn the package temp is idling at 46-55 C, jumping every second. min temp is 45 C. the max temp is 80 C idling according to hwmonitor. i’m getting spikes in high temperature that last a second or so but when I’m playing a game it can spike to 95-100 C
UPDATE: Disabled Boost and undervolted my CPU, now temp spikes are much more reasonable. Max idle temp after 1 hour according to hwmonitor is 53 C which is a lot better than random spikes to 80 C lol. thx to everyone who commented!
Thermal grease can last for a good while now. The older stuff would cake up and not be able to transfer heat as well. New stuff is pretty incredible, I retired my AM4 build about 6 months ago, and I’d had the same CPU in it for around 5 years without changing the paste. Pulled the cooler and it was pretty much the same consistency as when I put it on. This was some kronaught stuff.