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Subject: Re: C speed question.

Author: Andrew Slough

Date: 10:51:09 07/26/99

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On July 26, 1999 at 09:25:40, Robert Hyatt wrote:

>On July 26, 1999 at 04:10:21, Terry Ripple wrote:
>
>>On July 25, 1999 at 10:23:28, Robert Hyatt wrote:
>>
>>>On July 25, 1999 at 02:38:08, blass uri wrote:
>>>
>>>>I am interested to know the speed improvement that you get from celeron relative
>>>>to pentium200MMX in C chess programs.
>>>>
>>>>Can you get more than 100% speed improvement?
>>>>What is your experience about it?
>>>>
>>>>Uri
>>>
>>>
>>>Several points. The celeron cpu core is better than the P200/mmx core. The
>>>P200 is the old P5 architecture.  The Celeron is based on the pentium pro/
>>>pentium II cpu core.  Which is _much_ better.
>>>
>>>The celeron has both a L1 _and_ a L2 cache (running at core cpu speed,
>>>although the L2 is only 128kb).  The old P200 has a good L1 cache (same
>>>as Celeron) the the L2 cache is external and much slower.
>>>
>>>For comparison, I used to run crafty on a P233/mmx machine and found that to
>>>be about 70% of the speed of my pentium pro 200.  The celeron is a good match
>>>for the pentium-pro clock for clock.  450/500 celerons scream...
>>--------
>>Hi Bob,
>>  In the case of the AMD K6-2, how would this compare to the celeron and pentium
>>-pro clock for clock?
>>--------
>>Regards, Terry
>
>
>The data I have seen puts them pretty equal cycle-for-cycle, although I am not
>sure of the differences between the K6/3 and K6/2.  And I am not sure which was
>used in the test I saw...

AFAIK the *ONLY* difference between the K6/2 & K6/3 is that the K6/3 has an on
chip, full speed, 256k L2 cache. Like the celeron, but twice the size.

Andy



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