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Re: xbox 360 and macs
The IBM chip going into the xbox 360 is by no means a slouch, 3 x 3.2GHz dual thread (aka hyperthreading) cpu's. They're quoting over a teraflop of floating point peformance (thats a heck of a lot) the southampton uni supercomputer runs at around 3. somthing tflop's and that uses 600 opterons.
The cpu's would be dedicated for doing console like stuff, but still its no slouch, and i'm sorry but the G5 isnt the best processor out there by a long shot. It is afterall a cut down ppc970 (? not 100% on the code #)
The gpu in the new xbox is also very impressive, 48 pipelines running at 500mhz, and 512megs of 700mhz gddr3 ram. (comparison, x850pt is a 525mhz core but only 16 pipes, and has 256mb of 550mhz gddr3 ram) it just goes to show how much markup there is on pc parts since to build a pc to this sort of spec will set you back thousands, if the hardware existed, the gpu is years ahead of anything coming in the pc, unless the ati 'r520 fudo' is really a pc version of the xbox chip
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