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Re: CPU Temperatures



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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