hrmm... yeah that would mean the HEATSINK has to be 35C above ambient, which, IMHO is obscenely bad. also strange, since I can touch the heatsink on a tbird 1.4 and NOT get burned (volcano5).
so to get the die temp, you'd need its wattage, the C/W of the paste, and then the C/W of the heatsink, right?