From: pjw@hpctdkr.HP.COM (Peter Walsh)
Date: Tue, 21 May 1991 18:32:28 GMT
Subject: Re: Cyrix Coprocessors
Message-ID: <19840002@hpctdkr.HP.COM>
Organization: Hewlett-Packard CTD, Colo. Spgs.
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!think.com!sdd.hp.com!hp-col!hpctdlb!hpctdkr!pjw
Newsgroups: comp.sys.ibm.pc.misc
References: <43523@netnews.upenn.edu>

>/ hpctdkr:comp.sys.ibm.pc.misc / bilston@eniac.seas.upenn.edu (Lynne Bilston) /  9:55 am  May 20, 1991 /

>I have a 385/25 machine, brand new, and I want to buy a maths
>coprocessor for it. I have seen ads in PC magazines for 
>Cyrix and IIT coprocessors, quite a bit cheaper than intel ones.
>I was wondering are they REALLY 100% compatible with IBM (clone)
>machines, and whether you can just plug them into the existing
>slot like an intel coprocessor and have them behave exactly as
>an intel coprocessor (except faster I believe, according to the
>ads)??

>I would appreciate any advice,

>Thanks,

>Lynne Bilston
>Dept Bioengineering, University of Pennsylvania
>bilston@eniac.seas.upenn.edu
>----------

You can call Cyrix Corp. toll free at 1-800-848-2979 and ask for
their Compatibility Report and their Benchmark Report for any of
their chips. I purchased their SX version of the 387 and dropped
it right into a Taiwanies clone and have had no problems at all.
You might try looking at the Dec. 1990 issue of PC-World, I think
there is a review of 387 compatibles.

Peter J. Walsh
Hewlett Packard
Colorado Telecommunications Divsion
pjw@col.hp.com