When I put my Mac Mini under high load, it doesn't shut down.
Also, my old MacBook Air overheats very easily.
EDIT: Holy forget, 200 degrees F = 93 degrees C
Also, I once set a vehicle's scale to 1 10000 1 on his server, his CPU spiked to 100%, and I got my ass kicked (probably because he didn't want me to overheat his server-hosting comp)