Author: Andrew Williams
Date: 04:55:09 11/11/05
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On November 09, 2005 at 21:35:41, Vincent Diepeveen wrote: >On November 09, 2005 at 15:12:50, Joshua Shriver wrote: > >>I was reading (though not verified) that the Xbox 360 is going to have 3 cores >>running at 3.2ghz using a PPC architecture, with network capabilities. > >Perhaps you confuse Xbox with a playstation3 from Sony. Nope. What he wrote is an accurate description of the XBox 360. >It's supposed to get a 3.x Ghz cell processor. Besides a main processor it has 8 >'help' processors. 1 such processor is dedicated to the OS, the other 7 are >available for example for a chessprogram :) > I was at a presentation by a SCEE representative on Wednesday and she said that the chips are being manufactured with 8 SPEs, but only 7 will be enabled. The extra one is there to improve chip yields. The "master" CPU is a PPC-derived core and is called the PPE. The "slave" CPUs are called SPEs. The PPE has dual cores, IIRC. The CPUs are clocked at 3.2GHz. Unfortunately for computer chess fans, the PS3 has only 256MB RAM, although there is another 256MB for the NVIDIA graphics subsystem. Additionally, each SPE has 256K of memory of its own to play with. Like the PS2, the PS3 is characterised by having fantastic internal memory bandwidth. >A major problem of it will be that you need to rewrite your chessprogram >completely. I mean *every* byte, to get it to work at that hardware at a decent >speed. > >But then you'll have something. > >Who pays for that rewrite? > >>Wouldn't this make a great system for running a chess engine? >>At $350 it seems really cheap for that much processing power. >> >>Comments are appreciated. >> >>Josh Andrew
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