Author: Dann Corbit
Date: 19:21:46 11/20/03
Go up one level in this thread
On November 20, 2003 at 19:50:12, Uri Blass wrote: >On November 20, 2003 at 18:57:24, J. C. Boco wrote: > >>Doubling the processor speed or the time for thinking adds about 80 points to >>the SSDF-computer-ratings. But PC's are already running so fast that doubling >>their speed might mean searching at 15ply instead of 14ply. > >How do you get it? > >Based on the ssdf list even being 3 times faster does not give 80 elo. >A1200 is often more than 3 times faster than K6-450 > >Uri This query: SELECT a.engine, (a.Elo - b.Elo)/(1200.0/450.0) AS EloDiff FROM Ssdf AS a, Ssdf AS b WHERE a.Engine = b.Engine And a.Hardware like "*1200 MHz*" And b.Hardware like "*450 Mhz*" Order by (a.Elo - b.Elo)/(1200.0/450.0) Desc Returns this result set: engine EloDiff Gandalf 4.32h 50.625 Crafty 18.12/CB 50.25 Gandalf 5.0 42 Fritz 7.0 42 Deep Fritz 7.0 41.25 Rebel Century 4.0 40.125 Hiarcs 8.0 36.75 Chess Tiger 14.0 CB 32.25 Gambit Tiger 2.0 27.375 Deep Fritz 25.125 Junior 7.0 22.875 Chess Tiger 15.0 20.625 Shredder 5.32 20.25 And this query: SELECT sum((a.Elo-b.Elo)/(1200/450))/count((a.Elo-b.Elo)/(1200/450)) AS EloDiffAverage FROM Ssdf AS a, Ssdf AS b WHERE a.Engine=b.Engine And a.Hardware Like "*1200 MHz*" And b.Hardware Like "*450 Mhz*"; Gives this result: 34.7307692308 ~35 ELO per doubling seems like what we might expect. Give or take a large error bar.
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