There's a nice write-up here[1]. To summarize, using the Arrhenius equation as an approximation, one roughly gets that a 10C increase in operating temperature leads to cutting the expected lifetime in half.
However this is a rough approximation and does not consider various other failure modes, such as those associated with thermal cycling.
It also does not really matter much when significantly below the rated max temps: 2000 years cut in half is still plenty...
The take-away seems to be that operating continuously near the max rated temperature can have a significant effect on expected lifetime. Also extreme thermal cycling is probably not a good idea either.
There's a nice write-up here[1]. To summarize, using the Arrhenius equation as an approximation, one roughly gets that a 10C increase in operating temperature leads to cutting the expected lifetime in half.
However this is a rough approximation and does not consider various other failure modes, such as those associated with thermal cycling.
It also does not really matter much when significantly below the rated max temps: 2000 years cut in half is still plenty...
The take-away seems to be that operating continuously near the max rated temperature can have a significant effect on expected lifetime. Also extreme thermal cycling is probably not a good idea either.
[1]: https://www.electronics-cooling.com/2017/08/10c-increase-tem...