All CPUs are designed to withstand those temperatures.
If you look at the core temperatures of any modern CPU running with 'stock' cooling you will find them at 80+C.
My MacBook Pros regularly under full load reach that, my Mac Pro 4,1 reaches 90C if I don't manually ramp the fans up. 😛
And before you say OMGZ somethings wrong, no it's the temp from the sensor IN THE CORE, that is to say, where it is hottest...