Moore's Observation (Law) Re: SV: Capacity of the brain

Paul DeMone pdemone at igs.net
Sat Sep 11 08:15:30 EST 1999



Claudio Tagliola wrote:
> 
> >Moores Law, named for Intel co-founder Gordon Moore, states that
> >microprocessor performance doubles every 18 months.  It's a "soundbite"
> >law, based on previous performance, rather than anything as concrete as
> >atomic characteristics.
> 
> Moore's law has been broken by the arrival of the new AMD K7 chips,
> the speed has been doubled within 18 months and if one's to believe AMD's
> capabilities, this speed increase is legit. But this law held up extemely
> long,

   Moore's law is a general trend, not a physical constraint on
   chip designers.  The 21264 has 15.2 million transistors in it.
   It was followed shortly by the PA-8500 with about 130 million
   transistor in it.  Did *this* break Moore's law?  No, it is
   an apples to oranges comparison.  The 21264 is a very complex
   OOE CPU with 128 KB cache on it.  The PA-8500 is basically the
   previous generation CPU core shrunk from 0.5 um to 0.25 um,
   leaving it occupying about 25% of the die and the rest filled
   in with 1.5 MB of cache SRAM.  Is the next high end RISC CPU
   to be released (US-III?) going to follow this "mini-trend" and
   weigh in at over a billion transistors?  Not a chance.



--
Paul W. DeMone       The 801 experiment SPARCed an ARMs race of EPIC
Kanata, Ontario      proportions to put more PRECISION and POWER into
demone at mosaid.com    architectures with MIPSed results but ALPHA's well
pdemone at igs.net      that ends well.



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