PK-1 should not be any more difficult to apply than AS5. Indeed you should be able to apply them exactly the same way.
Anyway, PK-3 seems to be an improvement.
Originally Posted by Scorpion667
Admittedly, running a $600 CPU at 91c for 15 minutes was scary as hell.
CPU would have been fine at 91C plus for 15 months
Originally Posted by Sazz
if your using AMD cpu dont bother, I have 1090T tried one of em and I have my system at 100C for 15minutes and the thing didnt even do the reflow.. they said it might be just a deffective one but never gonna try that again, once is enough... maybe if you use intel CPU then you could try it w/o worrying as they have higher max TDP compared to AMD cpu's.
Temperature rating for AMD and Intel actually aren't appreciably different; there is simply no way to get a good idea of on-die temps on AMD CPUs currently.
Honestly, I'd do the reflow with the system powered down. Just heat the heatsink up with a heat gun. With no electricity going to them, most CPUs can easily survive a few minutes of 150C or more, with no ill effects.