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Subject: Re: News about Alpha 21464 (EV8)

Author: Robert Hyatt

Date: 10:48:12 01/24/01

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On January 24, 2001 at 12:07:38, Vincent Diepeveen wrote:

>On January 23, 2001 at 16:12:30, Dann Corbit wrote:
>
>>On January 23, 2001 at 03:59:04, Joshua Lee wrote:
>>
>>>microway sells the 21264's same as Compaq except cheaper and you have the option
>>>for windows or unix atleast that's what it looked like to me. $17,000 for a
>>>system that's over 2x as fast as the fastest Athlon or Pentium hmmm anyone know
>>>how much the thouroughput 5.2GB has to do with chess programs?
>>
>
>Some info about the used alpha systems.
>
>21164 has 8kb L1 cache,
>what do i need to say more?

There _is_ more.  It also has 96kb L2 cache, and most likely at least 1MB of
L3 cache.  The PIII only has 32kb L1 and 256K L2.


>
>for diep a 633Mhz 21164 is as slow as a PII at 380Mhz.

Not for me... the 21164 is still faster clock for clock.  Not as fast as
the 264, but faster.


>
>So that's a PIII at 300Mhz.
>
>Only the 21264 is interesting, but only if it's clocked to
>a reasonable height and dual. So dual 21264 866Mhz is worth
>the effort.
>
>A single 21264 866Mhz is of course never going to beat a dual PIII800
>not to mention a single 21264.

Did you see my numbers?  A single 21264 _is_ faster than dual PIII's at the
same clock rate, and that doesn't count the fact that a single is more
efficient than a dual on top of that.  Tim's Dual 21264 was faster than my
quad 700, for reference.  And his dual was 600mhz.






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