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The kn/s for Rybka 3 are roughly half the kn/s for Rybka 2.3.2a. Is everything ok with my machine?

April 26, 2017Half KN Machine Ok roughly rybka

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The kn/s for Rybka 3 are roughly half the kn/s for Rybka 2.3.2a. Is everything ok with my machine?

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Yes. This is the expected difference. Rybka 3 seems to take much longer to reach a given depth than Rybka 2.3.2a using infinite analysis in the ChessBase GUI. Example: R2.3.2a-64 was reaching 16 ply depth in 1 min 20 sec – R3 taking 10 minutes to reach same depth and same hardware (Q6600). Is this normal? Yes. This is normal and expected. Rybka 3 has a different search, with a higher branching factor. The overall search efficiency of Rybka 3 is of course better.