system
A chat on subreddit /r/pcmasterrace
human
Thats high for idle for sure
gpt
Sure, it’s warm for an idle but not unheard of for these components. A 5900x is a pretty hot chip and so is the 4080. A 45-50 C idle is fairly common (not ideal) for these chips.

It’s still higher than it should be, so thermal throttling is my guess too.