[pHaestus]

I am not convinced it's a traditional temperature compression either Les; I think it's more that the CPU is in thermal contact with the motherboard's traces and all that associated copper kinda smooths things out (doesn't show wbs performing as badly as Bill's die sim at really low flow rates and doesn't show wbs performing quite as well at high flow rates).. One could alternately conclude that the diode is in a "cool spot" on CPU and that this results in temperature compression.

The calibration's fine but what is the calibrated diode measuring? Is I think the major question