Is it OK to put the thermal sensor from External Temp displays on the CPU...

gamefreakgcb

Platinum Member
Sep 2, 2004
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I am thinking of getting an external Temperature Display/Fan controller device just for kicks but I am wary of putting the Thermal sensor between the CPU and the HSF, is that in any way bad for the CPU? I am currently waiting for a few essential components to arrive to finish the rig and wanted to know if I should do this or not.
 

Bluefront

Golden Member
Apr 20, 2002
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Absolutely not.....you'll probably short the sensor, and the heatsink will no longer touch the CPU properly which will cause overheating or worse.

Attach the sensor as close to the cpu as possible, but not between the HSF and the CPU. Sensors work better if out of the airflow....maybe cover the sensor with a small piece of tape.
 

Billb2

Diamond Member
Mar 25, 2005
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Originally posted by: gamefreakgcb
on an X2 4200+, can i stick it on the side of the metal plating?
Just make very sure it doesn't interfear, i any way, with the heatsink mounting.

 

996GT2

Diamond Member
Jun 23, 2005
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NOOO!!!! in NO CIRCUMSTANCES CAN A SENSOR BE IN BETWEEN HEATSINK AND CPU CORE!!!!!!!!

Doing so will cause an air pocket to form and will overheat your CPU
 

gamefreakgcb

Platinum Member
Sep 2, 2004
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i know, i was talking about the small 1mm side that is vertical to the mobo, not the one that goes under the HSF. are these things even reliable or accurate? would look kinda cool but I am well aware of the fact that NOTHING but good ol' thermal paste should be in between CPU Core and HSF. Was about to stick one on my XP2800+ a few years ago in my beginning days.
 

Bluefront

Golden Member
Apr 20, 2002
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On the side is ok.....sensors from various brands are usually accurate enough. Probably most are within 10%. Keep the sensor out of the airflow. That will affect the accuracy.
 

Operandi

Diamond Member
Oct 9, 1999
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Seems pretty stupid to me seeing as it serves absolutely no function (case bling is not a function).
 

Howard

Lifer
Oct 14, 1999
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If you put it on the side of the IHS, I doubt the readings would be accurate anyway.
 

Bluefront

Golden Member
Apr 20, 2002
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What do you mean by "no function"? Many fan controllers use external temperature sensors to regulate fan speed. If you are careful with the sensor placement, it will return a reading within 2-3C of the BIOS temp reading.

I rather prefer to have a CPU temp readout (LCD or LED) visible on the front of the case. Of course you could set all your fans at 12V and not worry about temps....:D
 

SparkyJJO

Lifer
May 16, 2002
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do NOT put the sensor between the CPU and HSF! My friend did that and while it didn't kill anything (even the sensor wasn't crushed surprisingly) it caused instantaneous overheat and shutdown. It would come on for a second or two then beep an overheat warning and shut off. The sensor prevents the HSF from contacting the CPU.