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From: Bill/Carolyn Pechter <pechter@shell.monmouth.com>
Message-Id: <199606191216.IAA24229@shell.monmouth.com>
Subject: Re: Cyrix and AMD chips
To: michaelv@HeadCandy.com (Michael L. VanLoon -- HeadCandy.com)
Date: Wed, 19 Jun 1996 08:16:15 -0400 (EDT)
Cc: freebsd-hardware@freefall.FreeBSD.org, freebsd-chat@freefall.FreeBSD.org
In-Reply-To: <199606190434.VAA18294@MindBender.HeadCandy.com> from "Michael L. VanLoon -- HeadCandy.com" at Jun 18, 96 09:34:37 pm
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> 
> 
> >Can anyone comment on the stability of these chips?
> >It will be running FreeBSD-stable 2.1.0
> 
> AMD chips are awesome.  They will work correctly with every
> motherboard that runs correctly with Intel chips.
> 
> The new Cyrix 6x86 (Pentium replacement) is supposed to be a great
> chip from all I've read.  It's definitely faster than a Pentium at the
> same clock speed (don't be fooled by the P-rating, though).  I'm
> pretty temted to get one since it's a good alternative to Intel.
> 
> AMD's K5 (their "6x86-ish" chip) is behind and is just coming out in
> 100MHz versions.  I'm sure it'll be a great chip too when they can
> finally produce fast versions of them in large quantities.
> 
> The Cyrix 5x86 sounds nice too.  It actually has some design
> enhancements beyond a normal 486.  (The "5x86" chips are designed for
> a 486 socket and motherboard.)  The AMD 5x86 is just a 486DX4 with a
> 16K write-back cache and quad-clock instead of tripled clock.  Still,
> it's a hellishly fast 486.  The AMD 5x86 133MHz is supposed to be
> ~75MHz Pentium in performance.

OK -- sounds great to me... I've got two 486/33's on older ISA Micronics
motherboards that need a shot in the arm (or a kick in the butt)
speedwise.  These are 5 volt motherboards designed around the 486/33
clock speed.  Is there any guarantee that any of these chips will work
correctly.  I've been told that the only thing that should work for sure
is the Intel 486DX2/66.

I'd love to go to the AMD 586 -- anyone have any experience with these
in older motherboards with the Voltage Regulator sockets?

Bill