From owner-freebsd-questions@FreeBSD.ORG Wed Oct 19 22:20:51 2005 Return-Path: X-Original-To: questions@freebsd.org Delivered-To: freebsd-questions@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0791516A420 for ; Wed, 19 Oct 2005 22:20:51 +0000 (GMT) (envelope-from cswiger@mac.com) Received: from pi.codefab.com (pi.codefab.com [199.103.21.227]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7EA5743D66 for ; Wed, 19 Oct 2005 22:20:48 +0000 (GMT) (envelope-from cswiger@mac.com) Received: from localhost (localhost [127.0.0.1]) by pi.codefab.com (Postfix) with ESMTP id 99EA15D2F; Wed, 19 Oct 2005 18:20:47 -0400 (EDT) Received: from pi.codefab.com ([127.0.0.1]) by localhost (pi.codefab.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 07927-04; Wed, 19 Oct 2005 18:20:44 -0400 (EDT) Received: from [199.103.21.229] (wonder.codefab.com [199.103.21.229]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by pi.codefab.com (Postfix) with ESMTP id C27A35C90; Wed, 19 Oct 2005 18:20:44 -0400 (EDT) In-Reply-To: <20051019204428.GB46703@polands.org> References: <20051019204428.GB46703@polands.org> Mime-Version: 1.0 (Apple Message framework v734) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <7BF2FC41-83C1-4E8C-8201-846783762B7B@mac.com> Content-Transfer-Encoding: 7bit From: Charles Swiger Date: Wed, 19 Oct 2005 18:20:42 -0400 To: Doug Poland X-Mailer: Apple Mail (2.734) X-Virus-Scanned: amavisd-new at codefab.com Cc: questions@freebsd.org Subject: Re: Installing 2nd CPU on SMP board X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 19 Oct 2005 22:20:51 -0000 On Oct 19, 2005, at 4:44 PM, Doug Poland wrote: > I've inherited an SMP machine for which I've no documentation and > don't > have convenient access to the hardware itself. The computer has a > single Xeon 2.8GHz CPU and I'd like to purchase another CPU. Question > is, can I simply match another Xeon of the same speed and expect it to > work? You want to get the same speed, FSB, and family number of Xeon, and it is preferable to get the same stepping number if possible. > If I need more info, will dmesg(8) tell me what I need to know? If you understand how to translate the dmesg display into processor steppings, sure. See pages 16-17 of: http://download.intel.com/design/Xeon/specupdt/24967849.pdf -- -Chuck