2009/6/6 Hideki Kato <hideki_ka...@ybb.ne.jp>: > Hi Lukasz, > > I have five core2 and one i7 computers running at home. I prefer i7, > though don't have exact measure. > > The most important difference is the memory interface, ie, core2 > uses a obsolete common bus (FSB) while i7 uses p2p connection with > an internal (on chip) memory controller. Also, core2 uses DDR2 > (obsolete) and i7 uses DDR3 memory modules.
I know the technical differences. I just wonder do they matter in practice of computer-go > > On overclocking, i7 performs better. i7 920 (cheapest model) runs at > 3.6 GHz (C0 stepping; recent D0 is said at 4 GHz) while core2 Q9550 > (middle range model) runs at 3.2 GHz, with a rather silent air > cooling. thanks. > > If you have a benchmark program please send me. Ubuntu Linux or > WIndows XP is fine. > http://www.mimuw.edu.pl/~lew/engine.gz please run with: ./engine --seed 123 -b FYI it tests only the processor, not the memory and is optimized for core2. > Ah, I don't prefer two sockets SMP computers since we will have hexa > and octa core chips soon (next year? I don't remember). I agree. > > Hideki > > Łukasz Lew: <c55009e70906060527i424cd3d9h525e8f87ec165...@mail.gmail.com>: >>Hi >> >>I have few days to buy a computer for Monte-carlo Go program. >>There is not enough money for a multi processor, so I have to decide between >>- core i7 2.66 GHz >>- some core2 quad >>both subjected to over-clocking. >> >>Have you observed that Monte-Carlo Go program is faster on core i7 >>than on core2 ? >> >>Lukasz >>PS >>Or have you found some cheap solutions for shared memory dual processor? >>_______________________________________________ >>computer-go mailing list >>computer-go@computer-go.org >>http://www.computer-go.org/mailman/listinfo/computer-go/ > -- > g...@nue.ci.i.u-tokyo.ac.jp (Kato) > _______________________________________________ > computer-go mailing list > computer-go@computer-go.org > http://www.computer-go.org/mailman/listinfo/computer-go/ > _______________________________________________ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
