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Subject: Re: k-7 Athlon

Author: Gregor Overney

Date: 17:05:41 07/06/99

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On July 06, 1999 at 12:50:15, Alain Lyrette wrote:

>Up to now the k-6 was generally the best cpu for chess programs cause of its raw
>integer strenth.So now that the k7 is almost on the market i taught that we had
>a winner here.Well although it seems like the k7 will beat the pentiun3 by a
>large margin in floatting point applications.the integer part of the cpu is
>similar to the k6.We WILL see an improvement but only because the cpu can
>actually go faster in mhz.(600 mhz and above).


"... k-6 was generally the best CPU for chess ...". - This it not correct. What
is the SpecINT95 (CINT95) for a K-6?

To give you an idea about "raw integer strength", I added a tiny list of systems
with only one CPU that are available since months on the market (source from
http://www.spec.org):

                          SpecINT95        SpecINT95_base
Alpha 21264/500 (DS-20)      27.7              23.6
PA-8500/440 (N4000)          34.0              30.8
PIII/550 Xeon (512 L2)       23.6              23.6  (Intel motherboard)
PIII/500                     20.6              20.6  (Intel motherboard)


From AMD's recent statement:

K-7/600                   SpecINT95_base estimated = 26.7 (?)


Remember, the difference between SpecINT and SpecINT_base is the level of
optimization. SpecINT95_base is the geometric mean of eight normalized ratios
when compiled with "conservative" optimization for each benchmark.

How does the K-6 outperform a PA-8500/440 in integer strength again? When
comparing CPU's, try not only to focus on Intel's offering. There are still
others out there.

Gregor



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