From owner-freebsd-questions Mon May 15 6:32:56 2000 Delivered-To: freebsd-questions@freebsd.org Received: from icebox.venux.net (icebox.venux.net [216.120.166.10]) by hub.freebsd.org (Postfix) with ESMTP id 5628237B7C1; Mon, 15 May 2000 06:32:51 -0700 (PDT) (envelope-from mitch@venux.net) Received: from servbox.venux.net (matrix.venux.net [216.120.166.5]) by icebox.venux.net (Postfix) with ESMTP id A548026202; Mon, 15 May 2000 09:39:14 -0400 (EDT) Received: from doot (doot.venux.net [10.0.0.65]) by servbox.venux.net (Postfix) with SMTP id 8A3DE2BD82; Mon, 15 May 2000 09:35:12 -0400 (EDT) Message-ID: <015501bfbe72$6d750d00$4100000a@venux.net> From: "Mitch Vincent" To: "Mike Smith" Cc: References: <200005130703.AAA01368@mass.cdrom.com> Subject: Re: FreeBSD SMP Date: Mon, 15 May 2000 09:35:26 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2615.200 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2615.200 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Both boards use the i840 chipset which is natively designed to support RDRAM but will use SDRAM (from what I understand) with a "Memory Repeater Hub" -- with a performance loss of about 10%. The i820 chipset has already been crushed by "Memory Repeater Hub" problems -- so I was really very worried about using SDRAM with any i840 chipset board... I appreciate all your guys input. Thanks! - Mitch "The only real failure is quitting." ----- Original Message ----- From: Mike Smith To: Mitch Vincent Cc: Mike Smith ; Chris Phillips ; Sent: Saturday, May 13, 2000 3:03 AM Subject: Re: FreeBSD SMP > > > Buy something smaller. Benchmark your application, and determine what > > > your performance requirements are. Make appropriate purchasing decisions > > > based on quantifiable results. > > > > Well, we have done this, we are upgrading, not starting from scratch. > > > > A dual system would work great, however I need a 64-Bit PCI slot to hold > > this Ultra 160 SCSI controller *and* I'd like to avoid spending $2500 in > > RDRAM to get what we already have in SDRAM :-) > > So buy eg. a Supermicro PIIIDM3 or an AMI MegaDual, both of which have > onboard U160 SCSI, both of which have 64-bit PCI, and both of which take > much less expensive SDRAM and PIII processors. > > > It's impossible, from what I've read to get exactly what I'm looking for.. > > It seems I'm going to have to put up with my drives running at half speed, > > or invest a lot more money in RAM. > > You're certainly not looking very hard. > > -- > \\ Give a man a fish, and you feed him for a day. \\ Mike Smith > \\ Tell him he should learn how to fish himself, \\ msmith@freebsd.org > \\ and he'll hate you for a lifetime. \\ msmith@cdrom.com > > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message