Author: Detlef Pordzik
Date: 17:38:14 08/28/00
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On August 28, 2000 at 16:48:21, Eddie wrote: >On August 28, 2000 at 16:32:46, Peter Skinner wrote: > >>In comparing a PIII 450 vs let's say an Athlon 750, what would the expected game >>win/loss % be for the PIII 450. >> >>For testing purposes, let's say we are using Crafty. >> >>Would the 450 get absolutely killed? > >Thats a good question for sure ... I'd like an answer myself. > >Stefan won it all with an Athlon .... so is the Athlon superior over the Pentium >in computer chess ? > >Experts in this field may help us ...... :)) Let me try it this way : a) a doubling of processing power allows -at average - 1 ply ( half move ) deeper search under tournament conditions ( 40 / 120 ). And this varies, of course, from prog to prog. So it majorly depends, for which purpose one uses his progs / PC combination. At analysis level the CPU ain't that important anymore - the more the technology of using the hash tables. besides : CPU can't be compared with CPU - lots of technics, Eddie. To give only one example : the former K6-3/xx isn't a real hit concerning the speed under today's general views anymore - BUT : the on die cache is adressed not just with the bus clock speed = 100 MHZ instead with the full CPU speed - so, for example, 450 MHZ - this is important, as well. b) SMK won this championship using an ATHLON - last year he used an INTEL - and won as well. The brand seems somehow over estimated, at least so I'd say. But, no rule without exeption : FRITZ is, was and probably allways will be : hand optimized for INTEL codes..... to sum this up, coming back to one of the questions : using the very same prog + release vs, same ammount of hash, same HD speed etc. of course the faster CPU would bring a noticeable benefit under these conditions. If you start this row with the other extreme : Crafty on the fast CPU and a slow searcher like CS TAL on the weaker CPU, the benefit isn't that clear anymore at all, because these kind of progs ( like HIARCS, as well ) depend only half as much on top technology. They get their kicks from the built in knowledge codes...... in the end I fear, this rather troubles more than it cleared up the question - but so it is : nothing is easy, in the end :-)) ELVIS
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