Article View: comp.arch
Article #22330Re: '040 vs. SPARC (was: Next computer...)
From: Charles Simmons
Date: Sun, 11 Feb 1990 06:07
Date: Sun, 11 Feb 1990 06:07
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2024 bytes
In article <38415@apple.Apple.COM>, baum@Apple.COM (Allen J. Baum) writes:
> From: baum@Apple.COM (Allen J. Baum)
> Subject: '040 vs. SPARC (was: Next computer...)
> Date: 7 Feb 90 18:02:06 GMT
>
> >In article <160@zds-ux.UUCP> gerry@zds-ux.UUCP (Gerry Gleason) writes:
> >Has anyone seen a 68040? I thought not. You are comparing
> >a chip that won't ship until this summer with one that is in
> >a machine that has been in production for some time. This
> >occurs over and over in the RISC/CISC debate, but that doesn't
> >seem to keep people from making these silly comparison's.
>
> I'm afraid that I have to agree with this one. The '040 has hit
> silicon, but you're still comparing a 1.2million transistor chip,
> with built-in caches, to a much smaller chip (how many transistors in
> the Cypress SPARC, anyone know?)
> --
> baum@apple.com (408)974-3385
> {decwrl,hplabs}!amdahl!apple!baum
While I am firmly a RISC bigot, there is a good CISC argument here.
When comparing the '040 and Sparc, you are not comparing a 1.2M
transistor chip with a 120K transistor chip. In the 1.2M transistors
of the '040, there's an ALU, FPU, portions of a cache, and probably an
MMU. For an accurate comparison, you'ld want to consider the Sparc chip
[ALU and portions of an MMU?], the FPU chip used with the Sparc, and
at least some of the transistors used to implement the off-chip Sparc
cache.
It has been suggested that when looked at in this light, the Sparc
uses just about as many transistors as the '040.
-- Chuck
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!apple!oracle!news From: csimmons@jewel.oracle.com (Charles Simmons) Newsgroups: comp.arch Subject: Re: '040 vs. SPARC (was: Next computer...) Message-ID: <1990Feb11.060709.19020@oracle.com> Date: 11 Feb 90 06:07:09 GMT References: <38415@apple.Apple.COM> <8905@portia.Stanford.EDU> <160@zds-ux.UUCP> Sender: news@oracle.com Reply-To: csimmons@oracle.com Organization: Oracle Corp Lines: 33