Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!bu-cs!mirror!prism!rob
From: rob@prism.TMC.COM
Newsgroups: comp.sys.ibm.pc
Subject: Re: Numeric coprocessors and clock spee
Message-ID: <206900130@prism>
Date: 16 Oct 89 17:58:00 GMT
References: <63438@<1989Oct15>
Lines: 8
Nf-ID: #R:<1989Oct15:-6343800:prism:206900130:000:365
Nf-From: prism.TMC.COM!rob    Oct 16 13:58:00 1989


   Many 286 machines run the 80287 at 2/3 the speed of the 286, so a
12Mhz machine might run the 80287 at only 8Mhz. The Zenith probably
does this, which is why you can use an 80287-8 safely.

   There's no advantage to using a higher-rated 80287; it'll still
be run at 8Mhz, and an 80287-10 (or higher) running at 8Mhz is no
faster than an 80287-8 running at 8Mhz.