Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!sharkey!indetech!vsi1!ubvax!pyramid!ctnews!ios!garyt
From: garyt@ios.Convergent.COM (Gary Tse)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Whis is fastest 386/33 or 486/25 ?
Message-ID: <991@ios.Convergent.COM>
Date: 13 Jul 90 16:23:34 GMT
References: <1990Jul11.161138.13630@dvinci.usask.ca> <217@news.nd.edu>
Distribution: na
Organization: Raoul Duke School of Journalism
Lines: 17

laughner@news.nd.edu (Tom laughner) writes:
>There would be no difference in speed between a 386 with a math
>coprocessor and a 486.  The 486 chip is a 386 + the math coprocessor in
>one.  Intel considers the 486 as a part of the 386 family.

Intel claims a CPI of 1.8 for the i486 (this counts internal cache
hits, obviously).  Glancing at the data book, I don't see any i386
instruction taking less than 2 clocks (a register-to-register move 
takes 2 clocks).

Which is faster?  <shrug>  It should be obvious.

-- 
Gary Tse,    garyt@ios.Convergent.COM || ..!pyramid!ctnews!ios!garyt
	     tse@soda.Berkeley.EDU    || ..!ucbvax!soda!tse
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                 "We are errant knaves all; trust none of us."