From owner-freebsd-stable Sun Jun 20 4:58:17 1999 Delivered-To: freebsd-stable@freebsd.org Received: from dorifer.heim3.tu-clausthal.de (dorifer.heim3.tu-clausthal.de [139.174.243.252]) by hub.freebsd.org (Postfix) with ESMTP id 6F4CE14D54 for ; Sun, 20 Jun 1999 04:58:13 -0700 (PDT) (envelope-from olli@dorifer.heim3.tu-clausthal.de) Received: (from olli@localhost) by dorifer.heim3.tu-clausthal.de (8.8.8/8.8.8) id NAA26300 for freebsd-stable@FreeBSD.ORG; Sun, 20 Jun 1999 13:58:12 +0200 (CEST) (envelope-from olli) Date: Sun, 20 Jun 1999 13:58:12 +0200 (CEST) From: Oliver Fromme Message-Id: <199906201158.NAA26300@dorifer.heim3.tu-clausthal.de> To: freebsd-stable@FreeBSD.ORG Subject: Re: SMP and celerons? Organization: Administration Heim 3 Reply-To: freebsd-stable@FreeBSD.ORG MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Newsreader: TIN [version 1.2 RZTUC(3) PL2] Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Gregory Sutter wrote in list.freebsd-stable: > On Sat, Jun 19, 1999 at 03:04:54PM +0000, Mark Turpin wrote: > > On Sat, 19 Jun 1999, Alexander Langer wrote: > > > Yes, but they work with such a slot1 adapter which helps the Celeron > > > by doing the required stuff (afaik) > > > > The celerons have the necessary pins to support multi-processing, > > but intel lists them as reserved in the data sheets. I do know that MSI > > (MicroStar) has released a PPGA->Slot1 converter with a jumper that > > connects the pins. All you have to do is use two PPGA celerons and two of > > these converters and it works. There is some more information > > available(part numbers and a picture) at http://www.cpu-central.com/ > > An acquaintance of mine who is a former member of the Celeron > development team said that the Celerons can do SMP, but there is a bug > that couldn't be fixed (in the time they had, without breaking other > test cycles), so they shouldn't be trusted for that. I have no further > details on the bug at this time. Please excuse me, but I'm inclined to believe that that claim is a typical marketing statement of intel, and not the truth. It's not a secret that intel tries to make their customers believe that the Celeron is inferior and more low-end than it actually is -- after all, they want to sell Pentium-IIs, too. According to intel, the Celeron is only half as good as the Pentium-II. But in reality, it is almost as good, and for many applications you simply cannot see any difference at all. See the articles and reviews at www.{cpu-central,tomshardware, bxboards,stormlabs,...}.com. Even the difference in the FSB clock (66 vs 100 MHz) doesn't make that much of a difference in performance, as intel would like us to believe. The Celeron is based on exactly the same core as the Pentium-II (the only difference being that it has 128 Kb L2-cache on-die, except for the -300 and older models, and only 66 Mhz FSB). So if the Celeron had a bug in its SMP support, the same bug should be present in regular Pentium-II processors. Regards Oliver -- Oliver Fromme, Leibnizstr. 18/61, 38678 Clausthal, Germany (Info: finger userinfo:olli@dorifer.heim3.tu-clausthal.de) "In jedem Stück Kohle wartet ein Diamant auf seine Geburt" (Terry Pratchett) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message