From owner-freebsd-hardware Thu Nov 14 04:36:10 1996 Return-Path: owner-hardware Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id EAA05932 for hardware-outgoing; Thu, 14 Nov 1996 04:36:10 -0800 (PST) Received: from po2.glue.umd.edu (po2.glue.umd.edu [129.2.128.45]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id EAA05924 for ; Thu, 14 Nov 1996 04:36:08 -0800 (PST) Received: from carrier.eng.umd.edu (carrier.eng.umd.edu [129.2.98.188]) by po2.glue.umd.edu (8.8.2/8.7.3) with ESMTP id HAA06903; Thu, 14 Nov 1996 07:36:05 -0500 (EST) Received: from localhost (chuckr@localhost) by carrier.eng.umd.edu (8.7.5/8.7.3) with SMTP id HAA24028; Thu, 14 Nov 1996 07:36:04 -0500 (EST) X-Authentication-Warning: carrier.eng.umd.edu: chuckr owned process doing -bs Date: Thu, 14 Nov 1996 07:36:04 -0500 (EST) From: Chuck Robey X-Sender: chuckr@carrier.eng.umd.edu To: Steve Passe cc: FreeBSD-hardware@FreeBSD.org Subject: Re: CPU heatsinks In-Reply-To: <199611140607.XAA10165@clem.systemsix.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-hardware@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk On Wed, 13 Nov 1996, Steve Passe wrote: > Hi, > > > 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? > > I wouldn't do it till you've got a couple days burnin. For one thing it wont > hurt to run a little hotter while checking for hardware flakyness. Also dont > want to give the vendor any excuse for not taking it back. I have found that > this stuff tends to "bake" over long periods of time and become more like > glue than paste. I once had a fan go after several years and literally had > to use a screwdriver to break it off the chip, not a lot of fun! > Just make sure it gets good mechanical contact when you reinstall it. > > Oh, one other thing, b4 you do appply it record ALL the numbers & wordage > you see on the top of the chip (& bottom while your at it). As you will > be helping with the SMP kernel we may want to know these for checking > against errata sometime in the future (you did volunteer to walk on the > bloody edge, didn't you?) Oh, yeah. I've been spoiled by nearly never having a panic on my other machine, I'm expecting them at least once on week for a while, during smp-playtime. thanks for the comments. ----------------------------+----------------------------------------------- Chuck Robey | Interests include any kind of voice or data chuckr@eng.umd.edu | communications topic, C programming, and Unix. 9120 Edmonston Ct #302 | Greenbelt, MD 20770 | I run Journey2 and picnic, both FreeBSD (301) 220-2114 | version 3.0 current -- and great FUN! ----------------------------+-----------------------------------------------