Author: Christopher A. Morgan
Date: 11:07:16 12/09/02
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Thanks for the posts. I do know that the AMD XP line model numbering is not in GHz, but is an attempt to be equivalent to the Intel GHz classification of their line of P4 processors, and that bus speed is very important in overall speed of the processor in all applications. I must have forgotten that in my post. That being said, the difference in speed, AMD processors being faster, is still considerable for chess it seems. This is in contrast to the standard bench tests done by Tom’s hardware comparing the latest AMD XP and Intel P4 processors. There seems to me to be a disconnect somewhere. Why would XP be so much faster in nps compared to P4 in a chess program, but be slower in almost every other bench test comparisons? I do agree that perhaps Crafty, due to various compilations and versions, is probably not the best choice for comparisons, and that one of the commercial programs would most likely be a better choice. On December 08, 2002 at 14:07:50, Christopher A. Morgan wrote: >Aaron, > >If I'm reading yours and Steffan's test results correctly, >Athlon XP 2520 is 1.578 million nodes per second, and P4 3.03 >with HT enabled is 1.161 million nodes per second. Your test >on Crafty 18.15 and Steffan’s test on Crafty 18.11. > >Although the different versions of Crafty could account for some >difference in speed (which way, I have no idea), the XP 2520 is some >36% faster than the 3.03 with HT. Bob’s test indicated with two >CPUs that with HT enabled the HT versions were some 33% faster >than without HT enabled. He was comparing P4s at ~ 2850 GHz or so. > >I see your other results that show that the XP 2520 is substantially >faster than the P4 at 3.25 GHz. > >This means that the XP 2520 is still the speed demon by a wide margin >compared to the P4, with or without HT enabled. Is this correct? Thanks! > > > > > > >On December 08, 2002 at 06:05:48, Aaron Gordon wrote: > >>I only have results from version 18.11 but here are a few... >> >>AthlonXP 2520MHz >>Total nodes: 104161030 >>Raw nodes per second: 1578197 >>Total elapsed time: 66 >>SMP time-to-ply measurement: 9.696970 >> >>Pentium 4 3255MHz without HT >>Total nodes: 104161030 >>Raw nodes per second: 1335397 >>Total elapsed time: 78 >>SMP time-to-ply measurement: 8.205128 >> >>AthlonXP 1860MHz >>Total nodes: 104161030 >>Raw nodes per second: 1197253 >>Total elapsed time: 87 >>SMP time-to-ply measurement: 7.356322 >> >>Pentium 4 2765MHz >>Total nodes: 104161030 >>Raw nodes per second: 1120011 >>Total elapsed time: 93 >>SMP time-to-ply measurement: 6.881720 >> >>http://speedycpu.dyndns.org/crafty/craftybench4.jpg - Crafty v18.11 benchmark >>list.
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