From owner-freebsd-questions@FreeBSD.ORG  Thu Oct 20 00:48:36 2005
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
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 66D1316A41F
	for <questions@freebsd.org>; Thu, 20 Oct 2005 00:48:36 +0000 (GMT)
	(envelope-from djp@polands.org)
Received: from moab.polands.org (CPE-24-208-53-189.new.res.rr.com
	[24.208.53.189])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 8F24043D62
	for <questions@freebsd.org>; Thu, 20 Oct 2005 00:48:35 +0000 (GMT)
	(envelope-from djp@polands.org)
Received: from jericho.polands.org ([172.16.1.35])
	by moab.polands.org (8.13.1/8.13.1) with ESMTP id j9JNqJqf050201;
	Wed, 19 Oct 2005 18:52:19 -0500 (CDT) (envelope-from djp@polands.org)
Received: from jericho.polands.org (localhost [127.0.0.1])
	by jericho.polands.org (8.13.3/8.13.1) with ESMTP id j9JNqJZh047599;
	Wed, 19 Oct 2005 18:52:19 -0500 (CDT)
	(envelope-from djp@jericho.polands.org)
Received: (from djp@localhost)
	by jericho.polands.org (8.13.3/8.13.1/Submit) id j9JNqJH0047598;
	Wed, 19 Oct 2005 18:52:19 -0500 (CDT) (envelope-from djp)
Date: Wed, 19 Oct 2005 18:52:19 -0500
From: Doug Poland <doug@polands.org>
To: Chuck Swiger <cswiger@mac.com>
Message-ID: <20051019235218.GB47568@polands.org>
References: <20051019204428.GB46703@polands.org>
	<7BF2FC41-83C1-4E8C-8201-846783762B7B@mac.com>
	<4356CF56.2090106@gmail.com>
	<6.2.3.4.2.20051019161158.05ff9160@cobalt.antimatter.net>
	<4356DB52.9030800@mac.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <4356DB52.9030800@mac.com>
User-Agent: Mutt/1.5.9i
Cc: kurt.buff@gmail.com, questions@freebsd.org,
	Glenn Dawson <glenn@antimatter.net>
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 <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 20 Oct 2005 00:48:36 -0000

On Wed, Oct 19, 2005 at 07:48:34PM -0400, Chuck Swiger wrote:
> Glenn Dawson wrote:
> >At 03:57 PM 10/19/2005, Kurt Buff wrote:
> [ ... ]
> >>>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.
> >
> >It's better to match the sSpec numbers...those include the stepping,
> >and not all processors of the same stepping have the same sSpec.
> 
> Intel's documentation for dual-proc and multiproc compatibility is
> based on family ID and stepping #, not on the s-spec #.
> 
> The family ID is akin to a major version number, and the stepping is
> akin to a minor version number.  You can get the family ID and
> stepping from dmesg, you cannot get the sSpec number via that
> directly.  For example:
> 
> CPU: Intel(R) Xeon(TM) CPU 3.00GHz (2992.71-MHz 686-class CPU)
>   Origin = "GenuineIntel"  Id = 0xf43  Stepping = 3
> Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
>   Hyperthreading: 2 logical CPUs
> 
> If you hunt down the right Xeon document:
> 
> http://download.intel.com/design/Xeon/specupdt/30240216.pdf
> 
> ...and search for "0xf43", you get:
> 
> S-Spec CoreStepping CPUID CoreFreq FSB L2_cache ....
> SL7ZF  N0           0F43h 3        800 2 MB     604-pin micro-PGA
> 
> 
Thanks for the tip.

-- 
Regards,
Doug