From owner-freebsd-hardware Sat May 9 07:01:52 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id HAA16562 for freebsd-hardware-outgoing; Sat, 9 May 1998 07:01:52 -0700 (PDT) (envelope-from owner-freebsd-hardware@FreeBSD.ORG) Received: from IBM.rhrz.uni-bonn.de (ibm.rhrz.uni-bonn.de [131.220.236.2]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id HAA16553 for ; Sat, 9 May 1998 07:01:47 -0700 (PDT) (envelope-from uzsv2k@IBM.rhrz.uni-bonn.de) Received: from uni-bonn.de (131.220.225.110,1027) by IBM.rhrz.uni-bonn.de (IBM/VM SMTP V2R2) with TCP; Sat, 09 May 98 16:01:52 MEZ Message-ID: <3554570D.2552D445@uni-bonn.de> Date: Sat, 09 May 1998 15:15:57 +0200 From: Philipp Reichmuth X-Mailer: Mozilla 4.04 [en] (Win95; I) MIME-Version: 1.0 To: hardware@FreeBSD.ORG Subject: Re: Underclocking: 486 References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > You can underclock CPU's - and they do run cooler... I used to run a > machine that was a 486DX4/100 with it's 'internal cache' disabled as I > didn't have a heatsink... If one can do without Pentium CPU power, I think a 486 is the best choice at the moment anyway because there are a lot of them available at very reasonable prices. You can get a 486 DX4/133 w/board fairly cheap and run the bus at 25 MHz, so the CPU runs at 100 internally and you don't lose the cache which is really a performance factor, esp. on the DX4/1xx ones because they're larger. It worked well without a fan for me, but the machine stood in a rather cool cellar. Installing a Pentium cooler ;-) should keep temperature at bay as well. Performance should be OK for router boxes, even though the PCI runs at 25 MHz there as well. Doesn't have much impact on network or SCSI performance, however. > I guess it might make sense to some people - I always prefer to have 'more > than adequate' cooling though... ;-) ;-) Philipp To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message