Author: Steve Glanzfeld
Date: 04:11:26 05/26/05
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On May 26, 2005 at 05:03:01, Robert Hollay wrote: >Just out of curiosity: how much stronger would be Rebel on a today's top PC >then it was on those 1998's one? As a very rough estimation, you can calculate the speed doublings for typical CPUs (for example: 500 MHz -> 1 GHz -> 2 GHz are 2 doublings), and multiply with 30...50 Elo. It is not clear which value is more near to the truth, against humans. Among comps, even values up to +80 Elo for twice the comp speed have been used with good correlation. Against humans, more speed has less impact. Of course, that means the performance gain with exactly the same software version on faster hardware. Hardware experts will be able to explain that a modern 2 GHZ CPU is more than 4 times faster than a 500 MHz P3, but that's why I write "very rough estimation." That uncertainty is unimportant because we have to guessimate :-) the Elo gain per doubling, anyway... Btw. the improved Rebel program is available for free, as an Engine for WB./UCI capable GUIs, under the new name "ProDeo," from http://members.home.nl/matador/prodeo.htm It is a Top-10 engine. Steve
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