How hot is to hot for a laptop U?

How hot is too hot for a laptop cpu while gaming?

Note* I am using a legion y740 15 inch.

You dont really want sustained 80c+ TBH

Depends on your definition of too hot. If you see that as damage to the CPU it would be 120 C. For peak loads something like 100 C. But any loads from 2 + minutes 80 indeed. Also if you count in the other parts like a battery you should really question what you are comfortable with. Asking this for overclocking? If so, stop what you’re doing and run stock. this machine should not be overclocked.