Article View: comp.sys.ibm.pc.misc
Article #7864Re: Math Coprocessors
From: Ray Berry
Date: Sat, 23 Feb 1991 22:33
Date: Sat, 23 Feb 1991 22:33
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sreese@slate.mines.colorado.edu (L. Scott Reese) writes:
>20MHz machine and have a couple of questions: Is it possible to
>use a slower speed math chip (ie. 16 MHz)? I have heard it is but
>get strange responses when I say that I want a 16MHz chip for my
>20MHz machine.
Technically they don't have to run at the same speed. However, most
motherboards only support synchronous operation (same speed). Your MB
manual or vendor should have an answer on this.
> Is there a major difference between the Intel 80387 and other
>math chips? I am mainly wanting to use the chip for Acad 10 and
>intensive graphing routines.
Cyrix chips are the fastest (~2x Intel) but since a very small
percentage of clock cycles are FPU instructions, in practice it really
doesn't matter too much. I suggest you use whatever you can get at the
best price.
--
Ray Berry kb7ht uucp: ...sumax!ole!ray CIS: 73407,3152 /* "inquire within" */
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!samsung!dali.cs.montana.edu!milton!sumax!ole!ray From: ray@ole.UUCP (Ray Berry) Newsgroups: comp.sys.ibm.pc.misc Subject: Re: Math Coprocessors Message-ID: <1820@ole.UUCP> Date: 23 Feb 91 22:33:30 GMT References: <1991Feb19.214611.31858@slate.mines.colorado.edu> Distribution: usa Organization: Seattle Silicon Corp., Bellevue, WA. Lines: 20