Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!lll-winken!uunet!mcvax!hp4nl!philapd!ssp2!pb
From: pb@idca.tds.PHILIPS.nl (Peter Brouwer)
Newsgroups: comp.arch
Subject: Re: 486 and 68040
Message-ID: <387@ssp2.idca.tds.philips.nl>
Date: 21 Apr 89 07:23:25 GMT
References: <17131@cup.portal.com> <6628@cbmvax.UUCP>
Organization: Philips Telecommunication and Data Systems, The Netherlands
Lines: 23

> As to which is faster, there's just not enough public information to call
> this one.  Intel has not yet released any real performance data.  They
> have quoted 37,000 Dhrystones and 6.1 MWhetstones at 25 MHz, and 15 to 20
> VAX MIPS. These figures, however, are from simulations.  I'll remain
> skeptical until we see some measured data.
Dhrystone figures are dangerous to use in comparing machines performances.
My experience is that the 386 dhrystone figures are much better than dhrystone
figures measured on a 68020 based machine, but the avarage performance of unix
on a 68020 based machine is better than on a 386 based machine.
I also have the impression that the code on an 386 machine becomes bigger than
on an 68020 generated code.
So an 68030 based unix machine would even perform better than an 386 based
unix machine.
Are there any information on how the 468 would compare to a 680xx based machine.
Would it be comparable to a 68040 or would it be comparable with a 68030 machine.



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