Hello,
I've seen this at THG.
I thought only AMD Athlon XP processors and below don't have thermal protection...? I'm sure the AMD Athlon 64 processors and the newer AMD Semprons have thermal protection built into the processor.
Though, most of the motherboards for socket A processors have some form of thermal protection, like automatically cutting power from the PC if it the CPU gets too hot or if not CPU heatsink fan is detected.