Discrepancy between reported readings from different interfaces

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Hi,

I'm running a core-i7 980x on ASUS Rampage III Extreme. I find that
the temperatures reported by the atk0110-acpi-0 and coretemp
interfaces to be quite different:

atk0110-acpi-0
Adapter: ACPI interface
CPU Temperature:       +56.5°C  (high = +60.0°C, crit = +65.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Core 0:      +52.0°C  (high = +81.0°C, crit = +101.0°C)

coretemp-isa-0001
Adapter: ISA adapter
Core 1:      +47.0°C  (high = +81.0°C, crit = +101.0°C)

coretemp-isa-0002
Adapter: ISA adapter
Core 2:      +45.0°C  (high = +81.0°C, crit = +101.0°C)

coretemp-isa-0003
Adapter: ISA adapter
Core 8:      +50.0°C  (high = +81.0°C, crit = +101.0°C)

coretemp-isa-0004
Adapter: ISA adapter
Core 9:      +45.0°C  (high = +81.0°C, crit = +101.0°C)

coretemp-isa-0005
Adapter: ISA adapter
Core 10:     +51.0°C  (high = +81.0°C, crit = +101.0°C)


Apart from the 5 degree difference between the reported CPU
temperature from the ACPI interface and the max. reported coretemp,
the high and critical temperatures are drastically different. 65
degrees C seems to small for junction critical temperature 32nm Si.
Could you please advise as to what the differences represent. Are they
indeed very different things or do I need to calibrate the ACPI
(Winbond?) interface to be close to the coretemp readings?
thanks,
-arun

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