Date: Thu, 14 Nov 1996 00:18:06 -0600 (CST) From: David Kelly <dkelly@hiwaay.net> To: Chuck Robey <chuckr@Glue.umd.edu> Cc: FreeBSD-hardware@FreeBSD.org Subject: RE: CPU heatsinks Message-ID: <XFMail.961114002841.dkelly@hiwaay.net> In-Reply-To: <Pine.OSF.3.95.961113220729.7822B-100000@downlink.eng.umd.edu>
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On 04:11:38 Chuck Robey wrote: >>I was messing around with my new motherboard, getting it into the new >case, and one of the two heatsinks popped off. Understand it's a dual >Pentium Pro system, with heat sinks definitely larger than the old >Pentiums. I noticed on taking a very, very careful closer look, that the >heatsinks had been installed sans the usual white silicone heatsink >compound, which I have on hand (having used on previous systems). Is >there some reason on the PPro that the silicone hadn't been applied, or >should I neatly smear some on? Was it "bare metal to ceramic" or by any chance was there a gasket in between? There are thin silicon gaskets that have similar conductive properties as the grease and are much cleaner. I've seen a lot of other places these days where the thermal grease and/or gasket was not used, am guessing they decided the heatsink was "good enough". So I grease 'em because I can't stand knowing its not as good as it could be. Be sure to use a real thin coat. Only a little more than the thinest you can do. Apply a thin coat, put the heatsink in place, then remove it and observe the contact. If you made a nice perfect contact between both surfaces the first time you probably used too much. -- David Kelly N4HHE, dkelly@tomcat1.tbe.com (wk), dkelly@hiwaay.net (hm) ===================================================================== The human mind ordinarily operates at only ten percent of its capacity -- the rest is overhead for the operating system.
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