Author: Albert Silver
Date: 09:54:28 01/28/99
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On January 28, 1999 at 12:07:44, KarinsDad wrote:
>I've noticed a rating increase from the Pentium 90 MHz to the P200 MMX (as
>expected). This implies that a doubling of the speed (plus bus improvements,
>minus hash table changes, etc.) results in approximately 70 points in increased
>rating as per the derived chart below (these being based on a x2.2).
>
>Inc. Program
>87 Hiarcs 6.0
>82 Rebel 9.0
>70 Rebel 8.0
>91 MChess Pro 6.0
>69 Genius 5.0 DOS
>
>Does anyone have a more detailed list of this type of information?
>
>How do the non-commercial programs fair in this regard?
>
>Is there any sort of curve associated with this from previous years (i.e. is the
>rate of this increase decreasing from previous years/earlier processors, or is
>the rate of increase remaining somewhat constant)?
>
>Has anyone done any work in increasing the time per move in order to emulate
>future processor types?
>
>Robert Hyatt has mentioned in a earlier post that on his quad, Crafty is running
>at approximate 1600 Mhz equivalence. Does this mean that Crafty run there is
>about 210 points higher (8x faster = 2^3 or 3x rating point increase) in rating
>strength than Crafty running on a P200 MMX? Or is the rating difference
>considerably less than that?
>
>Thanks
>
>KarinsDad
I think it is related to the degree of selectivity of the program. Take the two
top programs of the list: Hiarcs 7 and Fritz 5.32. On a 200MMX they are about
equal, but suppose you were to play them on a P90, or even better, on a 486/66.
I strongly suspect that Fritz would have an increasingly large advantage over
Hiarcs, because of the full plies it was computing. If on a 200 MMX Hiarcs were
doing 8 plies full width but on a P90 it lost a ply then it's loss in strength
would be considerably more as opposed to Fritz doing 11 plies full width and
then going down to 10.
Albert Silver
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