Using a thermal probe with a copper shim?

[Cherub]

I want to use a ribbon-style thermal probe to get accurate temps for my 1.33 AYHJA, but I would also like to use a shim for extra security (yah, I know...just be careful and you don't need one, etc., etc.).

1. should the probe go over or under the shim?
2. is the ribbon thin enough not to cause a problem with CPU angle or contact with the HSF?
3. does the probe read at the tip, or does it compute some sort of average, such that the copper shim will throw the readings off?

Any advice would be greatly appreciated.

 

[baldy]

good thing you asked.

no, anything under one side of the shim will cause the heatsink not be flat at all on the cpu core and you will have barbeq'd cpu.

the solution is simple, i have done it in the past. carefully cut the shim so the probe and/or wires have a channel to exit from next to the core, that way you can get the most accurate readings and still retain the shims ability to level and protect the core.

take your time, do not bend the shim, file the cut edges very carefully to remove any burrs that could cause tiltage, reassemble with or without probe in place (i ususally stick them in after everything is assembled, just kink the ribbon at the end a bit and the friction caused by bending will hold it in place once inserted properly.

good luck.

baldy

 

[bot2600]

hehe, he said probe...

 

[Cherub]

Is a ribbon probe really thick enough to make a difference? Obviously I wouldn't even ask about a round probe or one with cables coming out under the HSF. I'm talking about the ultra-thin style. I guess the only way to know is to do a test mount and check the thermal paste patch left on the HSF.