From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id 208AE1384C0 for ; Mon, 31 Aug 2015 09:42:51 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 7BFBF14203; Mon, 31 Aug 2015 09:42:43 +0000 (UTC) Received: from mail-wi0-f177.google.com (mail-wi0-f177.google.com [209.85.212.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 2019A141B2 for ; Mon, 31 Aug 2015 09:42:41 +0000 (UTC) Received: by wicne3 with SMTP id ne3so68977585wic.0 for ; Mon, 31 Aug 2015 02:42:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-type:content-transfer-encoding; bh=RkFyZnwGoBYD+1vwNk/zj7EeFjeFyGVKi4XMiq0YuwI=; b=HWgeKCeQux08hNSxS7Avop2zyRQODniS6C8lm3JnKjGdxv0PNxg3AQyoVtX6NXVYCt Q9pqxrq/fmeaBJ2LMBGh/9/BvTyE6M5+GdMc3VAHmM8K4EnhAzjda/kWYNENH1K6A01r C8/PlDyNI07Z2EqJ1kFnSQeEm7TtM0r26E9t0rt83uVTL2QLlNxpsJF6WIZmD4AWs6+f AWmaj/TZmSSI/yRhiN9VTGU9r9P9q8aAuzlSRMWuLA3/aoBCl6pYbIs2KMWjvHMa2aYO l6W8lBKLbEjoogyUHPIQ+BLoL//8MUvU6DvMseWerJyFMEzBJ0XbwOW592dSafzgRLGi vkUQ== X-Received: by 10.194.58.130 with SMTP id r2mr26408387wjq.72.1441014160826; Mon, 31 Aug 2015 02:42:40 -0700 (PDT) Received: from [172.20.0.41] ([105.210.27.19]) by smtp.googlemail.com with ESMTPSA id p20sm17166435wie.5.2015.08.31.02.42.39 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 31 Aug 2015 02:42:40 -0700 (PDT) Subject: Re: [gentoo-user] system uptime To: gentoo-user@lists.gentoo.org References: <20150830040443.GA1081@ca.inter.net> <55E337C9.7030001@gmail.com> <201508301826.50580.michaelkintzios@gmail.com> <8551914.hU4FhT7smn@wstn> From: Alan McKinnon Message-ID: <55E42184.6080002@gmail.com> Date: Mon, 31 Aug 2015 11:42:28 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 In-Reply-To: <8551914.hU4FhT7smn@wstn> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Archives-Salt: 5b30bd10-e074-438f-9de7-f8aa17658002 X-Archives-Hash: bbb56dd7493484bc3e7751749c196502 On 31/08/2015 10:50, Peter Humphrey wrote: > On Sunday 30 August 2015 18:26:49 Mick wrote: > >> Modern appliances with Green stickers on them (whatever they're called) are >> more efficient by design. To some extent this is also true with PCs. I >> still have an old Pentium 4 32bit running a couple of test environments and >> back up storage. I can assure you that the room gets hot after it has been >> running for a couple of hours! :-) > > The desktop machine I'm referring to (an Amari "workstation") dates from 2009. > It has an i5 processor, 16GB RAM* and two 2GB SSDs as the main power sinks. It > sits (runs) in a boxroom 6ft square and keeps it comfortably warm. I haven't > noticed any change in ambient temp since the SSDs replaced spinners. > > * Whoever named that Random Access had a strange understanding of English. The > last thing I want from memory is random access! How much better it would have > been to call it something like Direct Access. Oh well - much too late now. > It's random access to distinguish it from serial access. In the early early days there were a lot of strange methods being tried to build memory - like dots on a cathode ray tube! To get to bit you wanted, you had to wait till the scanning beam reached that part of the screen - serial access. Addressable memory on a grid pattern came much later. Random Access really means "able to access any random address as fast as any other random address". RAM is also not the opposite of ROM :-) -- Alan McKinnon alan.mckinnon@gmail.com