Need some help from artic silver users....

[8008S]

Well, I my duron has been offline for awhile since when i put Artic silver, my temp actually rose :Q. I was wondering how you applied it and how many times did you have to reapply it to work properly. Thanks

8008S

 

[GT1999]

<< Here's a very logical and proven explanation why you may not &quot;show&quot; a lower temp with better/silver greases.

First of all, nothing changes the heat flow/power dissipation of the cpu except the cpu itself and app/s running. And all heat generated is removed, but higher thermal resistance cooling systems force temp in cpu to rise in order to force the heat out, as &quot;Temp drop&quot; is the motive force in heat transfer. Cpu temp rises until heat out equals
heat generated...that's the physics.

But the cpu/hs heat transfer path has several components with their individual thermal resistances, and yes, the silver grease lowers the &quot;overall&quot; resistance, so it therefore lowers the cpu internal temp and the cpu case top
temp on the &quot;cpu side&quot; of the lower resistance silver grease interface.

But it &quot;does not&quot; lower the hs resistance. So for the same heat transfer, any sensor measuring hs surface or related temp will &quot;not be lower&quot;. In fact, it will be slightly
WARMER, because the lower resistance of the hs heat flow branch causes a bit more, (of total heat), to flow thru the hs rather than thru the constant resistance branch of the pins...a minor &quot;secondary/negative feedback effect&quot;.

Hope it's clear now that you can't measure the effectiveness of an interface material UNLESS you can measure the temp on the cpu side of the interface...which is a practical impossibility for most cases. Like real estate...&quot;location&quot; is everything.

You could try reading internal thermal diodes on Intel chips, as they are on the cpu side of interface. Diodes are not &quot;accurate&quot;, but they are &quot;repeatable&quot;...ie, tell same lies every day.
John C. >>




http://forums.anandtech.com/messageview.cfm?catid=28&amp;threadid=231273

 

[8008S]

Ahh, it turns out my Fop wasn't making correct contact w/ the die!