From owner-freebsd-hackers Sun Dec 8 22:30:39 1996 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.4/8.8.4) id WAA08398 for hackers-outgoing; Sun, 8 Dec 1996 22:30:39 -0800 (PST) Received: from horst.bfd.com (horst.bfd.com [204.160.242.10]) by freefall.freebsd.org (8.8.4/8.8.4) with ESMTP id WAA08389 for ; Sun, 8 Dec 1996 22:30:37 -0800 (PST) Received: from harlie (bastion.bfd.com [204.160.242.2]) by horst.bfd.com (8.7.6/8.7.3) with SMTP id WAA29531; Sun, 8 Dec 1996 22:30:08 -0800 (PST) Date: Sun, 8 Dec 1996 22:30:08 -0800 (PST) From: "Eric J. Schwertfeger" X-Sender: ejs@harlie To: Michael Smith cc: Carlos Ugarte , kuku@gilberto.physik.rwth-aachen.de, freebsd-hackers@freefall.freebsd.org Subject: Re: Amd (K5) 586 /133 In-Reply-To: <199612090412.OAA06894@genesis.atrad.adelaide.edu.au> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk On Mon, 9 Dec 1996, Michael Smith wrote: > Carlos Ugarte stands accused of saying: > > > > > I bought an A-Star (i430VX) mainboard and put in an Amd (K5) 133 MHz CPU. > > > dmesg tells me 100.23 MHz. Who's cheating? > > > No one, really. I'm pretty sure AMD uses a similar "rating" > > scale to Cyrix - the particular chip you have is called something > > like a K5-PR133, where PR stands for Pentium Rating (or something > > similar). It actually runs at 100 MHz, but its performance was > > found to be "equivalent" to a Pentium 133 MHz. > > I don't think so. This is a 2.2 system with an AMD K5-PR100 : > > Calibrating clock(s) relative to mc146818A clock ... i586 clock: 100252689 Hz, i8254 clock: 1193485 Hz > CPU: AMD Unknown (100.23-MHz 586-class CPU) The K5-PR100 and K5-PR133 are both 100Mhz CPU's, the PR133 just has a more efficient pipelining/microcoding/etc.