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Article #1232

Re: 486DXn

#1232
From: Matthias Kamm
Date: Thu, 17 Dec 1992 22:32
25 lines
1499 bytes
THOMAS LUNDQUIST (thomasez@dhhalden.no) wrote:
: 
: A question.
: 
: Have you seen the 486DX2 100 (50x2) ??
: When will it be in massprodution, or is it already ?
: It shouldn't be any problems using it with a 50MhzDX board, just with a CPU 
: fan (should be used anyway on 50 Mhz(my ›.20))
: 
: And how about the DX3 ???? (or DX4 for that's sake :=)
: I've heard about a DX3, but when, and possible cost ?
: It could be up to 150Mhz, quite fast. But I guess Intel don't know how to 
: handle such speeds :=)

I think the internal speed on chip is not the issue.  The DEC Alpha is
200Mhz on chip!  

I also read that the initial silicon runs of the 486 REALLY ran at 50Mhz,
but the problem was designing a backplane and/or motherboard that wouldn't
"make like an antennae" at those frequencies.  Even though the digital
clock rate is 50Mhz, all kinds of frequencies up into the gigahertz are
being generated, and microwave simulations are required just to run
traces correctly on a motherboard.  Has anyone heard the same thing?

MK
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From: matthias@nsr.hp.com (Matthias Kamm)
Newsgroups: comp.sys.intel
Subject: Re: 486DXn
Date: 17 Dec 1992 22:32:35 GMT
Organization: Hewlett Packard Santa Clara Site
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