From owner-freebsd-hardware@FreeBSD.ORG Mon Oct 9 00:57:54 2006 Return-Path: X-Original-To: freebsd-hardware@freebsd.org Delivered-To: freebsd-hardware@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 010BB16A403 for ; Mon, 9 Oct 2006 00:57:54 +0000 (UTC) (envelope-from dking@ketralnis.com) Received: from ketralnis.com (melchoir.ketralnis.com [68.183.67.83]) by mx1.FreeBSD.org (Postfix) with ESMTP id A538F43D45 for ; Mon, 9 Oct 2006 00:57:53 +0000 (GMT) (envelope-from dking@ketralnis.com) Received: from [10.0.1.239] (ayla.wifi.int.ketralnis.com [10.0.1.239]) (authenticated bits=0) by ketralnis.com (8.13.6/8.13.6) with ESMTP id k990vrEj018356 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO) for ; Sun, 8 Oct 2006 17:57:53 -0700 (PDT) (envelope-from dking@ketralnis.com) Mime-Version: 1.0 (Apple Message framework v752.3) In-Reply-To: <200610052145.54292.soralx@cydem.org> References: <3692C07B-CCCC-4756-9B33-6DA724481FF2@ketralnis.com> <200610041939.35376.soralx@cydem.org> <0431EB40-6AF8-49A6-9F87-0B707B1DDC94@ketralnis.com> <200610052145.54292.soralx@cydem.org> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <3ABF536B-F199-47B9-8B10-EF5A0644BC62@ketralnis.com> Content-Transfer-Encoding: 7bit From: David King Date: Sun, 8 Oct 2006 17:57:47 -0700 To: freebsd-hardware@freebsd.org X-Mailer: Apple Mail (2.752.3) Subject: Re: Quiet computer X-BeenThere: freebsd-hardware@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: General discussion of FreeBSD hardware List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Oct 2006 00:57:54 -0000 >>> You might wants to consider using a low-power 'brick'-type AC->DC >>> PSU (~90W?) and a DC-DC voltage converter that plugs directly into >>> a mainboard's power connector. This will be quite noiseless. >> Do you have any recommendations? Ideally it would mount on the case >> () like >> the current power supply does but I'm open to other options > something like this (random example): > http://www.logicsupply.com/product_info.php/products_id/596 The only types of power supplies with which I'm familiar are the ones that typically ship with most cases, so I'm a little confused by this, excuse my obvious ignorance :) What does the DC-DC converter do, if the AC-DC converter supplies DC power? What would be an example of this AC-DC converter? Could it power two 3.5" hard drives in addition to the motherboard? How does it differ from a regular power supply?