Path: utzoo!utgpu!cunews!bnrgate!bigsur!bnr-rsc!bcarh185!schow
From: schow@bcarh185.bnr.ca (Stanley T.H. Chow)
Newsgroups: comp.misc
Subject: Re: Accessory to double speed of 486 PCs
Message-ID: <3839@bnr-rsc.UUCP>
Date: 14 Dec 90 17:20:36 GMT
References: <2370004@hpwrce.HP.COM> <36894@cup.portal.com>
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Reply-To: bcarh185!schow@bnr-rsc.UUCP (Stanley T.H. Chow)
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In article <36894@cup.portal.com> ekalenda@cup.portal.com (Edward John Kalenda) writes:
>The December issue of Byte magazine has an article on the ICECap from Velox
>Computer Technology. The ICECap keeps the chip at 0 degress Centigrade and
>adjusts the input voltage to the chip to minimize delays. They had an
>experimental Everex Step 486/50 based on it.

Note that having the CPU chip running at 50 MHz is only the first step, the
whole motherboard and memory system must then keep up. The Everex actually
had a 50 MHz CPU running on a 25 MHz board (by divide the clock at strategic
places).

>Apparently, the increase in system cost would only be $600 so we should
>be seeing something based on it. I'd guess late in 1991 for the fisrt units
>to hit the street. Expect to pay through the nose, they'll charge you for
>running fast, not just for the cost of the part.

Getting a motherboard running at 50 MHz is a lot more difficult, just the
faster parts will run you thounsands of dollars; add in the design, 
manufacture and support costs amortized over a few machines, we are talking
major bucks. 


Stanley Chow        BitNet:  schow@BNR.CA
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Me? Represent other people? Don't make them laugh so hard.