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Subject: Re: How does the differences in computer speed, translate in terms of Elo?

Author: blass uri

Date: 11:01:37 09/01/99

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On September 01, 1999 at 09:35:57, Robert Hyatt wrote:

>On September 01, 1999 at 08:57:57, blass uri wrote:
>
>>On September 01, 1999 at 07:47:20, Robert Hyatt wrote:
>>
>>>On September 01, 1999 at 06:11:23, odell hall wrote:
>>>
>>>>Hi
>>>>
>>>>
>>>>  Is there a huge difference in terms of elo points between rebel 10 on the
>>>>K6-600 amd and what my system K6-II350 ? The rebel page suggest that the
>>>>diffence is very minor, 2554 for k6-amd and 2576 for k6600?  The reason I am
>>>>asking is because i am getting a little obssesed with the need to have the
>>>>strongest program, even though I could not beat rebel on my 486!!! I am
>>>>wondering if it would really be worth it to upgrade? What's a few rating points?
>>>>I probally would not notice the difference anyway.  I notice also that my rebel
>>>>found all the moves of schroeders Amdk6 600  in the last grandmaster challenge.
>>>
>>>
>>>As I have said before, if you double the speed, your 2x faster rebel will
>>>be about 70 points better than the slower one, when they play each other.
>>>Against humans, there is too little data but it is certain that the 2x faster
>>>one won't be 70 points better than humans it was playing equal with at the
>>>slower speed...
>>
>>We have information that it is the case about p200MMX vs p90
>>but we do not have information if it is the same at tournament time control for
>>faster hardware.
>>
>>The only way to prove that it is the case or to prove the opposite is by playing
>>games with faster hardware.
>>
>>Uri
>
>
>Actually we do have this.  The first such experiment was run on horribly slow
>hardware years ago.  Then Ken Thompson did the same with his belle machine and
>got the same results although at least 100X faster hardware was used.  Hitech
>did the same thing for longer time controls.  All three agreed.  Monty Newborn
>and Ernst both investigated searching way deeper which simulates faster hardware
>than anything other than Deep Blue has, and they _both_ found that deeper is
>still better...  with no 'tapering off' at least thru ply 15 in the middlegame.
>
>I'm convinced that faster = better, and that it is still linear and not getting
>worse.

I am not convinced that it is still linear.
The only proof can be by games and not by the probability to change your mind or
to find a new move because it is possible that the new move does not change the
result.

There is a point when it stop to be linear because you cannot improve forever
and it is not clear where is this point.

I know results of many games of pentium200 vs p90 at tournament time control but
I do not know the same for faster hardware(p450 vs p200).

Uri



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