My 3900X idles at 35 and hits 65 when it’s 100% all cores. With a decent cooler modern AMD runs pretty chill

My Ryzen 3900X idles at around 50C, although that’s a few generations ago now

There seems to be a big difference between older CPUs and the newer ones, where the newer ones are running a lot hotter now under load.

I personally use a 5800X and it gets to 90c often.

_{Anti Commercial-AI license (CC BY-NC-SA 4.0)}