My dumb queries for the day
How do you define idle and stressed? (what are you running to get to an idle state and what are you executing to put it under stress)
As I recall almost all P4 motherboards use the internal CPU thermal diode to measure temps. Does yours? Or are these readings from something else?
Are you sure that the processor isn't being throttled back by the system? (some P4 systems implement dynamic power management and will actually throttle back the processor depending upon various factors, in some cases including fan speed).
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