Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!sunybcs!uhura.cc.rochester.edu!merlin.cvs.rochester.edu!carlo
From: carlo@merlin.cvs.rochester.edu (Carlo Tiana)
Newsgroups: comp.sys.mac
Subject: Re: 68040
Summary: While on the subject...
Keywords: wait states
Message-ID: <5221@ur-cc.UUCP>
Date: 13 Feb 90 07:33:15 GMT
References: <1990Feb10.233412.15585@mathrt0.math.chalmers.se>
Sender: news@uhura.cc.rochester.edu
Reply-To: carlo@cvs.rochester.edu (Carlo Tiana)
Organization: Univ. Roch. Center for Visual Sci.
Lines: 23

In article <1990Feb10.233412.15585@mathrt0.math.chalmers.se> d6maca@dtek.chalmers.se (Martin Carlberg) writes:
>...
>The article says that the 68040 is 25% faster than the 80486 at the same
>clockspeed.
>...


While on the subject of "cross-sultural" comparisons (and with the caveat
that I know just about nil about the internals of anything more complicated
than a ball bearing): why is it that people are always quoting the number
of wait states in 80xxx chips and never for 68xxx chips? This probably a
silly thing to do, but how does my IIci rate compared to a say, an 80386
machine runnng at 25Mhz with n wait states?

On a similar note (equally naive question): why does a 25 Mhz 68030 in my
above-mentioned ci feel like it is nowhere near as fast as the 25Mhz 68030
in the news server that allows me to post these silly questions? I
certainly would not want other people logged into my Mac reading news while
I was typing away at a Word document, because performance would just die
(it's bad enough as it is -- though I guess I am spoiled).


carlo@cvs.rochester.edu