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Subject: Hash Table setting Formula according to Chessbase Steve Lopez?

Author: Brian Katz

Date: 10:27:35 01/19/03


Can someone please tell me if this formula still applies to faster processors?
As an example a 350MHz     and   3.0 gig  processors at a game with an average
of 3 minutes (180 seconds p/move)
Also, in using the Athlon performance numbers such as the Athlon 2600+ which is
a 2.13 gig Processor. Which figure do you go by? The 2.13 for the Gig or the
2600+ for the performance?

The formula is 2 X processor speed X avg. seconds per move / 1000.

For the 1st example:

2 x 350=700
700x180=126000
126000/1000=126 MB Hash Tables


For the 2nd example:

2x3000=6000
6000x180=1080000
1080000/1000= 1080 MB Hash Tables

Is this formula still a practical guide? If this is so, unless you have well
over a 1 gig of RAM with fast processors, this formula is useless for a normal
avg. 3 min per move tournament game.

I am presently using an AMD Athlon 2600+ XP (2.13 gig) with 1 gig of RAM.

It appears that trial and error is the best guide here. Not an exact science
however.

Any opinions on this would be greatly appreciated.

Brian Katz









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