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From: scjones@thor.UUCP (Larry Jones)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: Cyrix CX-803D87-20 Coprocessor
Summary: Non-Intel coprocessors
Message-ID: <128@thor.UUCP>
Date: 5 Aug 90 14:58:41 GMT
References: <14244@shlump.nac.dec.com> <1990Aug4.220844.7349@water.waterloo.edu>
Organization: SDRC, Cincinnati
Lines: 27

In article <1990Aug4.220844.7349@water.waterloo.edu>, nmouawad@water.waterloo.edu (Naji Mouawad) writes:
> Huh ? Sorry, I may look like a fool, but a Cyrix ? Gee I'm really
> out of touch ... The only non-intel co-processor I've heard of is the Weitek
> It seems that this beast is faster amd much more expensive than the Intel
> kitter...

There are now three sources of plug-compatible coprocessors.  (The
Weitek is faster and more expensive, but it's not plug-compatible --
you need a special socket [or adapter board] and special software to
use it.  Standard 80287/80387 code can't use it.)

Advanced Micro Devices (AMD) is now selling their copy of the
80287-10 for MUCH less than Intel does.  This chip is as exact
copy of Intel's (they have an agreement under which AMD got
all the info).

Cyrix makes clones of both the 80287 and 80387.  These are slightly
faster than Intel's parts and a little bit cheaper.

IIT also makes clones of bothe the 80287 and 80387.  These are a
good bit faster than Intel's parts for about the same price.
----
Larry Jones                         UUCP: uunet!sdrc!thor!scjones
SDRC                                      scjones@thor.UUCP
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