From owner-freebsd-hackers@FreeBSD.ORG Wed Feb 5 14:09:38 2014 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id B02142D2 for ; Wed, 5 Feb 2014 14:09:38 +0000 (UTC) Received: from mailhost.m5p.com (ip-2-1-0-2.r03.asbnva02.us.ce.gin.ntt.net [IPv6:2001:418:0:5000::16]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 5DA8B1CC8 for ; Wed, 5 Feb 2014 14:09:38 +0000 (UTC) Received: from wonderland.m5p.com (localhost [IPv6:::1]) by mailhost.m5p.com (8.14.5/8.14.5) with ESMTP id s15E9VSD070843 for ; Wed, 5 Feb 2014 09:09:36 -0500 (EST) (envelope-from george+freebsd@m5p.com) Message-ID: <52F2461B.1070405@m5p.com> Date: Wed, 05 Feb 2014 09:09:31 -0500 From: George Mitchell User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 MIME-Version: 1.0 To: freebsd-hackers@freebsd.org Subject: Re: opteron a1100 arm References: <1391538649.19169.79261269.3C5F49D1@webmail.messagingengine.com> <493DEB39-C4B4-409E-B8B2-B1B11E013754@netgate.com> <60555.1391549390@critter.freebsd.dk> <23B18B88-D888-46B3-99F6-905F86E20FAF@netgate.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.73 on 10.100.0.3 X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.2.7 (mailhost.m5p.com [IPv6:::1]); Wed, 05 Feb 2014 09:09:36 -0500 (EST) X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 05 Feb 2014 14:09:38 -0000 On 02/05/14 08:44, Jim Thompson wrote: > > >> On Feb 5, 2014, at 1:55, Kevin Bowling wrote: >> > [...] > >> Where A1100 wins hands down is memory capacity, and possibly even memory bandwidth (DDR4 mentioned in the PR..). >> >> Intel's server Atom chips and even the extremely powerful Xeon E3 are quite limited by 32GB RAM (and it's also somewhat expensive vs RDIMMs). > > I'm not sure what your point is. > > The C2750, C2550, C2558 & C2758 will all address 64 GB of DDR3 RAM. > > You'll have to use Registered DIMMs and likely drop back to DDR3 to get to 128GB on the A1100. > > So I see parity in terms of addressable RAM. > > [...] This discussion is very entertaining. But let's not lose sight of the main point: ARM processors are not going away. It is to FreeBSD's detriment if we don't have Tier 1 support for a processor that, by some guesses, already comprises the majority of new installations by count. -- George