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High CPUTIN Temps

Collider

Senior member
Jan 20, 2008
511
2
81
I'm seeing CPUTIN Temps of 90-95C, while Max CPU Core Temps are ~75C - this is under 100% stress running Prime95. CPU is moderately overclocked.

As I understand CPUTIN is not the CPU Core itself, but the sensor on the motherboard underneath the CPU, so essentially this is the temp of the motherboard part / circuitry right under the CPU.

Any temps above 90 make me quite worried. My question is, is this normal or should I be worried ?
 

VirtualLarry

No Lifer
Aug 25, 2001
50,495
6,065
126
I think that this is concerning. Usually, CPUTIN is lower than CPU "Core Temps". So if CPUTIN is 95C, Core temps are 115C or higher?
 
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ClockHound

Golden Member
Nov 27, 2007
1,108
213
106
If this is your Xeon rig in the Asus board, then it could also be a defective sensor. And if you haven't changed out the thermal compound on the VR/NB sinks, that can cause high temps. Also a small fan over the NB sink can help too. After new thermal pad/compound. My X58 Sabertooth reported some high temps before thermal pad swap.

Failing all that then a sealed icepack on the backside of the motherboard can help. Just remember to swap out every hour. ;-)
 

Collider

Senior member
Jan 20, 2008
511
2
81
So it seems that my case had a heat pocket. I added an exhaust fan, a 2nd CPU fan and I turned on the fan on the opposite side of the CPU socket (my case has a fan mount on the opposite side of the motherboard to help cool off the back of the CPU socket). Also for testing I took the case side covers off.

Now CPUTIN is the same temp as my highest temp CPU core. Running Prime95 under 100% load my CPUTIN & CPU Core temps are 55-60c.
 

ClockHound

Golden Member
Nov 27, 2007
1,108
213
106
That's good news. Airflow is important after all.

Altho it would have made a great YT video: Man Keeps Ancient Server Processor Alive using Only his Bare Hands and an Icepack. ;-)
 
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