Disclaimer! This is not meant to turn in a discussion about which temps people think is okay, what they are comfortable with etc etc, all that is pointless! so don't start it plz.
I'm usually running Open Hardware Monitor as default and due to my large screen space, it's usually also open. Basically I actually keep an eye out, specially right now since I just got a new cpu cooler.
But today I noticed something very interesting, when I render using all cores in Corona (hit the render button), my temps end up at XX and sits there fairly stable even when rendering for an extended amount of time, but here is where things get odd. I noticed in OHM that my max temps (so the highest temp a core gets to even if its for a split second) often seems a lot higher than what they are when I monitor it.
It turns out that my cpu jumps about 10-15 degrees in temp only during the denoise stage! CPU load is 100% both during rendering and denoise, no changes there, but it's like the cpu suddenly gets a lot more voltage when rendering stops and denoise starts? Could there be something in the way denoiser is written that could cause this?
Since I am overclocking and pushing my computer power, while still being at temperatures that are fine and okay, having temps suddenly jump 15 degrees even for 4-10 seconds feels very scary! Temps aside, it feels like it could also lead to instability if there really is something going on?
I just wanted to highlight this find, if anyone else wants to do some testing. I will try another temp monitoring app as well (though this usually works like a dream).
edit: p.s. I am using the latest daily 12th of march.