From owner-freebsd-hardware Wed Jan 28 23:50:11 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id XAA22917 for hardware-outgoing; Wed, 28 Jan 1998 23:50:11 -0800 (PST) (envelope-from owner-freebsd-hardware@FreeBSD.ORG) Received: from www2.shoppersnet.com (shoppersnet.com [204.156.152.112]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id XAA22891 for ; Wed, 28 Jan 1998 23:50:04 -0800 (PST) (envelope-from digital@www2.shoppersnet.com) Received: from localhost (digital@localhost) by www2.shoppersnet.com (8.8.8/8.8.8) with SMTP id XAA22829; Wed, 28 Jan 1998 23:46:21 -0800 (PST) (envelope-from digital@www2.shoppersnet.com) Date: Wed, 28 Jan 1998 23:46:21 -0800 (PST) From: Howard Lew To: Greg Lehey cc: FreeBSD hardware Users Subject: Re: Heat sinks and coolers: grease or pad? In-Reply-To: <19980129154037.61654@lemis.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from QUOTED-PRINTABLE to 8bit by hub.freebsd.org id XAA22896 Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org X-To-Unsubscribe: mail to majordomo@FreeBSD.org "unsubscribe hardware" On Thu, 29 Jan 1998, Greg Lehey wrote: > I recently bought an AMD K6/233, and I'm still looking for a cooler > which will keep it cool enough. Today I got a thing double the size > of the last (well-dimensioned) one, and mounted it. It look bovine > rc564 3 minutes to overheat the processor. > > I'm wondering what to do next. Both this cooler (which claims a > thermal resistance of 0.8°C/W) and the previous one have a pad stuck > on to the processor side, presumably in order to facilitate heat > transfer. What's the best way to use this? Should I use thermal > grease anyway? Should I use it instead? Any other bright ideas? Yes, use thermal grease. I have seen an instance where a K6-233 cpu without the heatsink grease will not boot up Win95 completely, but when the grease is applied it works like a charm. I think because of this AMD makes heatsink grease mandatory. If the heatsink is getting good thermal contact, the heatsink-fan should be very hot... (a fast fan helps to cool the heatsink too...) Otherwise, you are not getting good thermal contact. If you still have problems, it may be a remarked cpu or perhaps a Cyrix fan may help given that it does spin 3X faster and the heatsink is about a whole inch high.