Paxren,
On behalf of Tom's Moderator Team, welcome aboard!
What is your ambient (room) temperature?
Please define "under heavy load" ...
Although "Throttle" temperature is 100°C, the consensus among well informed and highly experienced system builders, reviewers and overclockers, is that cooler is better for ultimate stability, performance and longevity. As experts all agree that it's prudent to observe a reasonable thermal margin below Throttle temperature, here's the nominal operating range for Core temperature:
Core temperatures above 85°C are not recommended.
Core temperatures below 80°C are ideal.
Core temperatures...