From owner-freebsd-current Thu Jul 4 6:24:42 2002 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B5E6F37B400 for ; Thu, 4 Jul 2002 06:24:39 -0700 (PDT) Received: from duke.cs.duke.edu (duke.cs.duke.edu [152.3.140.1]) by mx1.FreeBSD.org (Postfix) with ESMTP id E9FB343E09 for ; Thu, 4 Jul 2002 06:24:38 -0700 (PDT) (envelope-from gallatin@cs.duke.edu) Received: from grasshopper.cs.duke.edu (grasshopper.cs.duke.edu [152.3.145.30]) by duke.cs.duke.edu (8.9.3/8.9.3) with ESMTP id JAA00118; Thu, 4 Jul 2002 09:24:38 -0400 (EDT) Received: (from gallatin@localhost) by grasshopper.cs.duke.edu (8.11.6/8.9.1) id g64DO8227187; Thu, 4 Jul 2002 09:24:08 -0400 (EDT) (envelope-from gallatin@cs.duke.edu) From: Andrew Gallatin MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15652.19576.327299.996758@grasshopper.cs.duke.edu> Date: Thu, 4 Jul 2002 09:24:08 -0400 (EDT) To: Chuck Robey Cc: Subject: Re: Recommended MP development machines... In-Reply-To: <20020703233926.N66398-100000@april.chuckr.org> References: <20020703202553.A12306@dragon.nuxi.com> <20020703233926.N66398-100000@april.chuckr.org> X-Mailer: VM 6.75 under 21.1 (patch 12) "Channel Islands" XEmacs Lucid Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Chuck Robey writes: > > The main difference in the updated chipset is the fact that the 64 bit PCI > slots now run at double-speed, giving double the throughput. No change Most motherboards which support 64-bit/66MHz PCI slots can't run them anywhere near the theoretical limit. So its more like a 50% improvement than 100% improvement. For objective comparisions of chipsets see http://www.conservativecomputer.com/myrinet/perf.html Drew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message