CPU Temperatures
Seann Clark
nombrandue at tsukinokage.net
Thu Aug 21 16:53:17 UTC 2008
Rich Emberson wrote:
> I've got a ASUS P5Q Deluxe running a Intel quad core QX9550.
> When I display the current temperature readings I get:
>
> > sensors
> coretemp-isa-0000
> Core 0: +44.0°C (high = +74.0°C, crit = +100.0°C)
> coretemp-isa-0001
> Core 1: +32.0°C (high = +74.0°C, crit = +100.0°C)
> coretemp-isa-0002
> Core 2: +37.0°C (high = +74.0°C, crit = +100.0°C)
> coretemp-isa-0003
> Core 3: +38.0°C (high = +74.0°C, crit = +100.0°C)
> (plus other stuff like which fans are running, etc.)
>
> Is this expected behavior, that the four cores have different
> temperatures by as much as 10°C?
>
> The above temperatures were measured when I first logged in.
> After doing a bunch of stuff, the temperatures become:
>
> coretemp-isa-0000
> Core 0: +48.0°C (high = +74.0°C, crit = +100.0°C)
> coretemp-isa-0001
> Core 1: +32.0°C (high = +74.0°C, crit = +100.0°C)
> coretemp-isa-0002
> Core 2: +37.0°C (high = +74.0°C, crit = +100.0°C)
> coretemp-isa-0003
> Core 3: +42.0°C (high = +74.0°C, crit = +100.0°C)
>
> Again, different temperatures. Are the temperatures on
> the 4 core CPU chip really that different?
>
> Thanks, Richard
>
This is normal for a multicore system. I have a dual quad core system
and it shows total and per die temps that are between 2-15 degrees
difference in temp based on CPU usage. on my system it is usual for
cores 1, 5 and 7 to get more use than the other 5 cores See below:
CPU1 Temp: +29.0°C (high = +100.0°C, hyst = +95.0°C) sensor = Intel PECI
CPU2 Temp: +35.0°C (high = +100.0°C, hyst = +95.0°C) sensor = Intel PECI
temp5: +27.0°C (high = +100.0°C, hyst = +95.0°C) sensor = thermistor
temp6: +38.0°C (high = +100.0°C, hyst = +95.0°C) sensor = thermistor
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +51.0°C (high = +82.0°C, crit = +100.0°C)
coretemp-isa-0001
Adapter: ISA adapter
Core 1: +34.0°C (high = +82.0°C, crit = +100.0°C)
coretemp-isa-0002
Adapter: ISA adapter
Core 2: +40.0°C (high = +82.0°C, crit = +100.0°C)
coretemp-isa-0003
Adapter: ISA adapter
Core 3: +34.0°C (high = +82.0°C, crit = +100.0°C)
coretemp-isa-0004
Adapter: ISA adapter
Core 4: +37.0°C (high = +82.0°C, crit = +100.0°C)
coretemp-isa-0005
Adapter: ISA adapter
Core 5: +54.0°C (high = +82.0°C, crit = +100.0°C)
coretemp-isa-0006
Adapter: ISA adapter
Core 6: +37.0°C (high = +82.0°C, crit = +100.0°C)
coretemp-isa-0007
Adapter: ISA adapter
Core 7: +54.0°C (high = +82.0°C, crit = +100.0°C)
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