I read cpu cores can go up to about 99C and throttle themselves down as they get too hot.
But in the long run it's probably better to get the temp down. My 2 case fans were pretty much dead and my cores were like 60C ambient, 82C maxed and after replacing them it went to like 40C ambient, 60C maxed and I feel like the world is less likely to end now. Not sure how much you can change in a laptop to improve cooling though.