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Subject: Re: chess computer ratings

Author: José Carlos

Date: 16:28:04 09/23/01

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On September 23, 2001 at 15:54:57, Michael Fuhrmann wrote:

>On September 23, 2001 at 10:21:44, Robert Hyatt wrote:
>
>>On September 23, 2001 at 09:04:34, gregory j capace wrote:
>>
>>>If you have a faster processor, how much strength does this dd to the program ?
>>>Does Fritz 6 run any stronger on my 566 mghz, versus a 450 nghz. , like the
>>>rating says. How strong would it be on a 1.2 mghz. computer ?
>>
>>
>>Against humans, there is no real data.  If you are talking about taking a
>>program on an XXX megahertz machine, and playing it against a program on
>>a 2*XXX megahertz machine, then the faster machine will be rated about 60
>>points higher, using the typical Elo formula.  I don't think that +60 will
>>be true for games vs humans, however.  It might be 1/2 of that or even less.
>
>Is this true regardless of what XXX is? To rephrase, while going from 350
>megahertz to 700 might yield a 60-point elo bonus, would going from 1 gigahertz
>to 2 gigahertz also yield 60 points? And what about a hypothetical 2 gigahertz
>to 4 gigahertz? Isn't there a horizon effect whereby the elo gain diminishes?

  That's my opinion too. There must be a flattening of the curve, according to
my intuition. In the extreme case going from 6000 plies to 6001 plies doesn't
matter, because you are seeing the whole game. The same applies to time so, if
in the end, the gain is zero, there must be a slow flattening, or a step. I
believe it's a slow flattening.

  José C.



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