Path: utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!rutgers!usc!zaphod.mps.ohio-state.edu!rpi!crdgw1!crdos1!davidsen
From: davidsen@crdos1.crd.ge.COM (Wm E Davidsen Jr)
Newsgroups: comp.arch
Subject: Re: 486 and FPUs (was Re: Let's pretend)
Keywords: Intel, 586, windows
Message-ID: <3067@crdos1.crd.ge.COM>
Date: 19 Dec 90 14:58:17 GMT
References: <1990Dec18.082623.16648@kithrup.COM> <15145@ogicse.ogi.edu> <3060@crdos1.crd.ge.COM> <1990Dec19.051616.3763@kithrup.COM>
Reply-To: davidsen@crdos1.crd.ge.com (bill davidsen)
Organization: GE Corp R&D Center, Schenectady NY
Lines: 15

In article <1990Dec19.051616.3763@kithrup.COM> sef@kithrup.COM (Sean Eric Fagan) writes:

| Yes, but the Cyrix '387 clone uses fewer cycles than the '486's on-chip FPU.

  Can you quote me your source on that, and post the numbers? I have run
some benchmarks and see the Cyrix as faster than the "slow" 387,
slightly faster than the 387-33 (which is new microcode), and slightly
slower than the 486, all at 25 MHz.

  I believe someone has a board which allows you to run up to four
387/Cyrix/ITT chips memory mapped, and some ventor libraries to support
it. Since it was a DOS product I didn't make a note of it.
-- 
bill davidsen	(davidsen@crdos1.crd.GE.COM -or- uunet!crdgw1!crdos1!davidsen)
    VMS is a text-only adventure game. If you win you can use unix.