From owner-freebsd-hardware Sun Jun 21 23:27:19 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id XAA28377 for freebsd-hardware-outgoing; Sun, 21 Jun 1998 23:27:19 -0700 (PDT) (envelope-from owner-freebsd-hardware@FreeBSD.ORG) Received: from panzer.plutotech.com (ken@panzer.plutotech.com [206.168.67.125]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id XAA28346 for ; Sun, 21 Jun 1998 23:27:02 -0700 (PDT) (envelope-from ken@panzer.plutotech.com) Received: (from ken@localhost) by panzer.plutotech.com (8.8.8/8.8.5) id AAA26374; Mon, 22 Jun 1998 00:26:43 -0600 (MDT) From: "Kenneth D. Merry" Message-Id: <199806220626.AAA26374@panzer.plutotech.com> Subject: Re: O/S Support for large [512Mb] PC systems In-Reply-To: <199806220433.VAA03531@antipodes.cdrom.com> from Mike Smith at "Jun 21, 98 09:33:03 pm" To: mike@smith.net.au (Mike Smith) Date: Mon, 22 Jun 1998 00:26:42 -0600 (MDT) Cc: Dave.Tyson@liverpool.ac.uk, port-i386@netbsd.org, freebsd-hardware@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL28s (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org [ Just a couple of comments on this ] Mike Smith wrote... > > 4) Has anyone used any of the Supermicro boards e.g. P6DBS with the builtin > > Adaptec Dual Channel UWSCSI ? or got suggestions for other suitable > > motherboards (preferably ones with will take up to 1Gb RAM) I should > > point out that 'the management' would REALLY like to use a commercially > > available box rather than me build one out of bits ! One thing to keep in mind is that the P6DBS has an Adaptec AIC-7895 on board. This means that it will only work with FreeBSD and the CAM patches (ftp://ftp.FreeBSD.ORG/pub/FreeBSD/cam/README) or a fairly recent Linux kernel. [ ... ] > - If you want more than 512MB of memory, you need to use Pentium Pro > processors. (This may change with new PII models; I'm a few months > out of date. Be very certain to check this carefully.) For the 233-333MHz versions of the Pentium II, you are correct. However, the 350 and 400MHz versions can cache up to 4GB. See: http://developer.intel.com/design/pentiumII/datashts/24365701.pdf Look on page 9. If you're up for waiting a bit, though, I would probably wait for a Slot 2 processor and the 450NX chipset. You will be able to do 4-way SMP with the 'Xeon' processors, and the cache will run at the same speed as the processor. Ken -- Kenneth Merry ken@plutotech.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message