From owner-freebsd-questions Mon Apr 5 17:37:40 1999 Delivered-To: freebsd-questions@freebsd.org Received: from ptldpop1.ptld.uswest.net (ptldpop1.ptld.uswest.net [198.36.160.1]) by hub.freebsd.org (Postfix) with SMTP id DD15014ECE for ; Mon, 5 Apr 1999 17:37:29 -0700 (PDT) (envelope-from dpilgrim@uswest.net) Received: (qmail 18283 invoked by alias); 6 Apr 1999 00:35:30 -0000 Delivered-To: fixup-questions@FreeBSD.ORG@fixme Received: (qmail 18231 invoked by uid 0); 6 Apr 1999 00:35:29 -0000 Received: from fdsl89.ptld.uswest.net (HELO uswest.net) (216.161.80.89) by ptldpop1.ptld.uswest.net with SMTP; 6 Apr 1999 00:35:29 -0000 Message-ID: <3709569A.70EEC38A@uswest.net> Date: Mon, 05 Apr 1999 17:34:34 -0700 From: Darren Pilgrim Organization: Neatly stacked heaps of digital chaos X-Mailer: Mozilla 4.51 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: unknown@riverstyx.net Cc: Mark Ovens , Greg Lehey , Leif Neland , FreeBSD Questions Subject: Re: K6-2/333, was: Re: Debug kernel by default (was: System sizewith -g) References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG unknown@riverstyx.net wrote: > I may be out to lunch on this one, but I'm pretty sure that the multiplier > is for the internal clock of the chip. So, if, after applying the > multiplier to one chip you get 300MHz, and after applying a different > multiplier to a different chip with a different bus speed you also get > 300MHz, you get two chips that perform the exact same number of > operations/sec. The difference is the bus speed, which affects I/O > performance, etc. A 100 MHz bus with a x3 multiplier will outperform a 66 > MHz bus with a x4.5 multiplier because the CPU will have to wait more > often when it wants to fetch non-cached data from RAM. While this is mathematically and theoretically sound thinking, tests have shown that there is little CPU/memory performance gain with a 100MHz bus. Just take a look at www.tomshardware.com. As for my own systems, I run K6-2 333s at 5x66 just because it sets the PCI and AGP clocks at their spec'd rate of 33 and 66MHz, respectively, while providing the CPU's spec'd 333MHz. -- dpilgrim@uswest.net /\ / __ Our lies are merely the gryph@mindless.com / \/OC/URNE truth of another world ICQ: 29880099 Death is not a kill -9, just a DALnet: anim0s make world and shutdown -r now PGPKey available To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message