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From: jc58+@andrew.cmu.edu (Johnny J. Chin)
Newsgroups: comp.sys.ibm.pc
Subject: Re: 8087-2
Message-ID: <8Xq=Sry00W0Y44T6kI@andrew.cmu.edu>
Date: 21 Jan 89 17:02:47 GMT
Organization: Carnegie Mellon, Pittsburgh, PA
Lines: 27

The math co-processor is only used the help SPEED up calculations on programs
which will use the chip.

Use the following as a guide for which chip to use.

CPU speed                    Co-Processor
4.77-8MHz (8088,8088-2)      8087, 8087-3 (5MHz)
8MHz-10MHz (8088-2, 8088-1)  8087-2 (8MHz)
10MHz and up (8088-1)        8087-1 (10MHz)

If you have a V20, follow the specs for 8088-2.
Of course, the price will increase with the speed of the chip.
Generally, 5MHz 8087 costs about $90-$110, 8MHZ costs $110-$180, and
10MHz costs $175-$240.

I hope this info helps.

                                        -- J. Chin (a.k.a. Computer Dr.)
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Disclaimer:   The views expressed herein are STRICTLY my own, and not CMU's.