Yeah, I found this when I was Boinc protein folding for Covid. The work units ran for hours, my towercPC nearly melted, and then I found that this produced mere milliseconds of simulation!
I’ll be that guy, but a computationally complex problem won’t push your computer to a temperature beyond design limits.
Allegedly. It allegedly won't do that.
Practically, running your CPU at design limits for a very long period of time tends to cause the temperature of the rest of the chassis to want to equalize to that temperature, which can be above comfort limits.
When someone says that the sky is falling, that also doesn’t need to be explained