Because, these are idle values:
BIOS: SYS 34 C CPU 32 C lm-sensors: temp1: +34.0 C (low = +127.0 C, high = +127.0 C) sensor = thermistor temp2: +31.0 C (low = +127.0 C, high = +127.0 C) sensor = thermistor temp3: +25.0 C (low = +127.0 C, high = +127.0 C) sensor = thermistor And when i for example compile firefox temp3 will rise to around 45-50 C, while temp2 stays at 31 C. > Date: Fri, 23 Mar 2012 01:14:56 -0700 > From: guenter.roeck@xxxxxxxxxxxx > To: tomasx@xxxxxxxxxxx > CC: lm-sensors@xxxxxxxxxxxxxx > Subject: Re: IT8728 shows wrong CPU temperature > > On Fri, Mar 23, 2012 at 04:00:35AM -0400, Tomas Johansson wrote: > > Hi! > > > > I have a Gigabyte GA-P67A-UD5-B3 with a IT8728F, yesterday i upgraded to Linux > > 3.3 and tested the new IT87 module. > > As i will show below it shows wrong CPU temperature. > > > > First: > > > > temp1 shows system or motherboard if you want. > > temp2 shows ?, probably unused > > temp3 shows CPU but is 7-8 degrees wrong compared to BIOS (I know that temp3 is > > CPU because it is the only temp value that differ under load) > > > > > > BIOS at this moment in time showed: > > SYS 34 C > > CPU 32 C > > > > > > coretemp-isa-0000 > > Adapter: ISA adapter > > Physical id 0: +36.0 C (high = +80.0 C, crit = +98.0 C) > > Core 0: +36.0 C (high = +80.0 C, crit = +98.0 C) > > Core 1: +35.0 C (high = +80.0 C, crit = +98.0 C) > > Core 2: +33.0 C (high = +80.0 C, crit = +98.0 C) > > Core 3: +35.0 C (high = +80.0 C, crit = +98.0 C) > > > > it8728-isa-0290 > > Adapter: ISA adapter > > in0: +1.08 V (min = +0.00 V, max = +3.06 V) > > in1: +2.03 V (min = +0.00 V, max = +3.06 V) > > in2: +2.96 V (min = +0.00 V, max = +3.06 V) > > in3: +2.93 V (min = +0.00 V, max = +3.06 V) > > in4: +0.24 V (min = +0.00 V, max = +0.84 V) > > in5: +1.20 V (min = +0.00 V, max = +3.06 V) > > in6: +1.55 V (min = +0.00 V, max = +3.06 V) > > 3VSB: +3.38 V (min = +0.00 V, max = +6.12 V) > > Vbat: +3.26 V > > fan1: 1056 RPM (min = 0 RPM) > > fan2: 0 RPM (min = 0 RPM) > > fan3: 0 RPM (min = 0 RPM) > > fan4: 0 RPM (min = 0 RPM) > > fan5: 1374 RPM (min = 0 RPM) > > temp1: +34.0 C (low = +127.0 C, high = +127.0 C) sensor = thermistor > > temp2: +31.0 C (low = +127.0 C, high = +127.0 C) sensor = thermistor > > temp3: +25.0 C (low = +127.0 C, high = +127.0 C) sensor = thermistor > > intrusion0: ALARM > > > > > > > > Conclusion: > > > > fan1, shows correct value. > > fan5, shows correct value. > > temp1 (system), shows correct value. > > temp3 (CPU), shows wrong value, in this case 25 C instead of 32 C. > > > I am a bit lost here. Why do you assume that temp2 (which would show roughly > the correct temperature) is unused, and that temp3 is the CPU temperature ? > Why not temp2=CPU and temp3=??? > > What happens if you run something challenging on the system ? > > Guenter |
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