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Article #1067Re: The Macintosh 4400/166 fan noise problem
From: andy the pugh
Date: Wed, 27 May 1998 00:00
Date: Wed, 27 May 1998 00:00
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In article <1d9nnii.sim80gcftt2cN@p38.nas1.is2.u-net.net>, the moving finger of real-address-in-sig@rhu.barb.foobar wrote... > >andy the pugh <A.C.Pugh@shef.ac.uk> wrote: >> I tried 240MHz, but it wouldn't boot. Anyone any idea why? > >Yes, it's 50% beyond spec. The only guaranteed speed is 160MHz. >Anything faster is down to luck. > Arguably as the chip was designed to go up to 300MHz in the same process size Apple are running them 50% below spec. Whilst I see your point, it seems odd that the problem is failure to boot at the higher clock speed rather than, say, overheating and crashing some time later. Back to the original subject, I suspect the 4400 could be made much quieter by clipping a little CPU-mount fan to the existing heatsink and unplugging the one in the front of the case. -- ap
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10b5a2,86bc1de8bc66807f X-Google-Attributes: gid10b5a2,public From: A.C.Pugh@shef.ac.uk (andy the pugh) Subject: Re: The Macintosh 4400/166 fan noise problem Date: 1998/05/27 Message-ID: <6kgo9q$683$1@bignews.shef.ac.uk> X-Deja-AN: 356936995 References: <B18B5BDB966849B5@dialup-11-50.netcomuk.co.uk> <B18C8AFB96684D42B@dialup-21-25.netcomuk.co.uk> <6kedn9$q3n$3@bignews.shef.ac.uk> <1d9nnii.sim80gcftt2cN@p38.nas1.is2.u-net.net> Organization: Mech Eng, Sheffield University Newsgroups: demon.tech.mac