I have no heat issues at the moment - 1.2G T-bird with FOP32-1 runs at 34C idle and 24C mobo. Sorry, don't have load numbers, haven't installed OS yet. On the case I have an 80mm back exhaust and front intake in addition to the 350W PS fan (which is the loudest of all of them).
What I DO have a problem with is the 133Mhz bus - at 9x133 it doesn't POST at all when I set it there, and while I've heard it is a general problem with the KT133A chipset, most of the threads I've read about it under, seem to also be using the Epox 8KTA3...