Copper spacer rises temp 12 C

Usul

Golden Member
Nov 3, 2000
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I just installed one and my proc temp is 12C higher.
Any possible reason?

I'm using a taisol HSF.

And I didn' put any non conductive thermal compound.

 

Engineer

Elite Member
Oct 9, 1999
39,230
701
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Usul,

as Mikewarrior2 as pointed out, the copper spacer will actually "absorb" heat from the Heatsink and redistribute it into the ceramic packaging of the CPU itself, causing the temperature to rise. Without the spacer, the heat will pass from the CPU die to the heatsink directly and not into the ceramic area.
 

Dan

Diamond Member
Oct 9, 1999
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So of what value is the copper spacer? I thought it was supposed to reduce heat, not increase it.
 

Usul

Golden Member
Nov 3, 2000
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Me too, otherwise they would make tose out of ceramic...
And to preservate the core....
 

Mikewarrior2

Diamond Member
Oct 20, 1999
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A) How are you measuring temp?

B) If you used grease, cpu temp would increase further

C) Shims have ZER0 cooling help. If a shim contacting a cold-plate-then (fiberglass pcb) has no benefit to cpu temp, then a hot surface contacting shim won't either.


Mike
 

Usul

Golden Member
Nov 3, 2000
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Ok, but a 12 C increase...

I ude the stupic ABIT on-board thermistor.
 

Mikewarrior2

Diamond Member
Oct 20, 1999
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with a socket-thermistor it shouldn't be that higih of a temp climb. I'd suspect no more than 2-3C actual rise with a shim.

The other problem could be that the shim is too tall, adn your heatsink is no longer contacting cpu core.


Mike
 

Usul

Golden Member
Nov 3, 2000
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What about a flexed spacer?
Could be?
If so I'll tryto fix it tonight...

Thanks Mikewarrior :)
 

Agrippa

Member
Aug 1, 2000
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Strange stuff! My temps dropped 3 and 4 degrees C when I stuck on the shims.... Same thing happened on my T-Bird.

Agrippa
 

Usul

Golden Member
Nov 3, 2000
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Yes, that's why I posted here.
i'll take it off and see if it's not flat or something.
 

Spoooon

Lifer
Mar 3, 2000
11,563
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Shims aren't meant to lower temps, they are just to help prevent the HSF from crushing the core if you're not careful. If you're careful, it's no big deal. However, if you're new to the world of socket chips and afraid you might damage something, a shim might be a good idea.
 

Usul

Golden Member
Nov 3, 2000
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I'm not new neither afraid, just wandering why it's going 12C up.
2C is fine, 12 isn't !

I lost 50 MHz in o/clock for this.
I'm going to take it out next time i restart the box!
 

conlan

Diamond Member
Jan 27, 2001
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hmmmm this IS strange , i used mine (shim) for stability not expecting a temp. drop but i got one anyway , albeit a very small one ( 1 deg. C )