Got a question on Intel CPU thermal specs

  • Thread starter Thread starter JugHead McGraw
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JugHead McGraw

What exactly does Asus Probe measure when measuring CPU temperature? For my
CPU, intel's specs list a recommended max of
38 degrees Celcius for the maximum recommended fan inlet temperature, and a
maximum case temp of 73.2 degrees. Is this what's measured by Asus Probe?

I'm running a P4 3.2E

Thanks!
 
What exactly does Asus Probe measure when measuring CPU temperature? For my
CPU, intel's specs list a recommended max of
38 degrees Celcius for the maximum recommended fan inlet temperature, and a
maximum case temp of 73.2 degrees. Is this what's measured by Asus Probe?

I'm running a P4 3.2E

P4's have a diode on-die that is plumbed into the hardware monitor. Software
reading the appropriate hardware monitor channel gets die temp readings...
 
Thanks for the info. One followup question. Intel doesn't list acceptable
die temps in their thermal specs, or at least not on the page I looked at.
Do you know where I could find that, or at least whether or not die twmps
are higher than fan inlet temps. Thanks again
 
Thanks for the info. One followup question. Intel doesn't list acceptable
die temps in their thermal specs, or at least not on the page I looked at.
Do you know where I could find that, or at least whether or not die twmps
are higher than fan inlet temps. Thanks again

Die temps will always be higher than pretty much anything else you can measure
- even the tiniest thermal resistance between die and cooling solution
guarantees that.

On current P4's there are at least two mechanisms that try to protect the
processor from overtemp conditions, one that throttles, and if that fails the
other commands the system to shut down the VRM/VRD. That tends to make any
"absolute maximum die temp" just a theoretical value - the chip just won't get
there unless the throttle is disabled.

That said, the majority of the Si components I design with have maximum temp
ratings in the 85°C range, and we try to shoot for 70°C worst-case for
reliability reasons (even though these are fault-tolerant servers we try not
to make our own lives more difficult ;-)

/daytripper
 
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