From owner-freebsd-smp Mon Apr 28 11:05:49 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id LAA28374 for smp-outgoing; Mon, 28 Apr 1997 11:05:49 -0700 (PDT) Received: from critter.dk.tfs.com (phk.cybercity.dk [195.8.129.17]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id LAA28354; Mon, 28 Apr 1997 11:05:37 -0700 (PDT) Received: from critter (localhost [127.0.0.1]) by critter.dk.tfs.com (8.8.5/8.8.5) with ESMTP id UAA00310; Mon, 28 Apr 1997 20:04:34 +0200 (CEST) To: Bernie Doehner cc: Terry Lambert , smp@freebsd.org From: Poul-Henning Kamp Subject: Re: Quad Pro 150 motherboard? In-reply-to: Your message of "Mon, 28 Apr 1997 13:44:12 EDT." Date: Mon, 28 Apr 1997 20:04:34 +0200 Message-ID: <308.862250674@critter> Sender: owner-smp@freebsd.org X-Loop: FreeBSD.org Precedence: bulk In message , Bernie Doehne r writes: >Didn't anyone ever notice those neat traces between the CPUs and other >devices on the MB? The higher and higher you go in frequency, the shorter >and shorter a wavelength becomes and the more and more these traces start >to look like antennas. There's a physical limit as to how long these >traces can be and this limit also affects how closely you can space CPUs, >without setting up a CPU hierarchy. Uhm, we're about an order of magnitude from that point yet... -- Poul-Henning Kamp | phk@FreeBSD.ORG FreeBSD Core-team. http://www.freebsd.org/~phk | phk@login.dknet.dk Private mailbox. whois: [PHK] | phk@tfs.com TRW Financial Systems, Inc. Power and ignorance is a disgusting cocktail.