My Xbox Series X was on its side on my television shelf. After a few hours of gaming, I noticed the console was getting very hot. I didn't take the temperature, but it was around 60 to 70 ° C. Since then, I've kept the console upright outside of the TV shelf and it stays nice and cool.
Can the one-time and short-term overheating lead to permanent damage? How warm can the console get?
No, it will not suffer permanent damage like this.
Especially since the console switches itself off if it actually overheats. The next time you start the console you will get a message in such a case.
Basically, you should always make sure that the hot air that escapes at the top of the Series X has enough space and can't build up. That was probably the case with you because the console itself only gets a little warm.
I just can approve that too!