ou are going to want to read page 79-80 of the processor specifications
LINKY
When cpu power-draw is increased so is Tcase. Thermal Throttle will always kick in at 85C on Conroe and 100C on Kentsfield. Specifications state that running your cpu in a state of throttle over time will degrade the chip.
Tcase is .26x+43.2 where x is W of cpu usage. As x is increased so too is the temperature of the die.
That is why Conroe E6600 is .26(65) + 43.2 (16.9+43.2) == 60.1 or Tcase. It will be higher on X6800 and also Kentsfield.
tCASEMAX is 85 degrees, tCASEHALT is 100 degrees. These can not be disabled.
Again this is why Dell can release OEM C2D boxes that have core temps of 75-80 degrees, my Macbook with a Yonah DC is even higher than that running around 90 degrees C, but it is still below tCASEMAX for the chip which is 100.
Server market is also screwed if Intel is only allowing temps of 60. You know how hard it is to keep 8 cores in a blade that cool.
Going to Explode!