IBT is going to heat that chip up more than anything you'll ever do to it. But there's still an issue.
You may need to reseat that HSF again! But first, make sure your temperatures are right. Try a few different applications and see what type of temperatures and voltages you're reading. I'd imagine you're either not seated correctly or it is tossing too many volts at it. If your 212 is seated right it should be able to hold that processor at full load with 1.35v under 80-85C