mas () on 8/2/05 wrote:
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>David Kanter (dkanter@realworldtech.com) on 8/2/05 wrote:
>---------------------------
>>David Wang has finished up a third article on the CELL microprocessor at Real World
>>Technologies. The third article examines some recent revisions to the CELL processor
>>and theorizes on the cause of these changes, inconsistencies in the claimed computational
>>power of the PS3, the CELL programming model and the power characteristics of CELL.
>>
>>The address for the article is:
>>
>>http://www.realworldtech.com/page.cfm?ArticleID=RWT072405191325
>>
>>
>>Kudos to David for this great read.
>>
>>
>>Enjoy,
>>
>>
>>David Kanter
>
>Yes, another fine job. So with 7 SPEs we can say for every cycle the SPEs provide
>2 DP FMADD and the PPE 1 DP FMADD giving 6 DP flops/cycle. 3.2 Ghz gives 19.2 peak
>DP GFlops which means for reference that I2/P5 could match this peak at 4.8 Ghz
>although how much a Cell could sustain in practice is not certain. Coincidentally
>by having 3 PPEs the Xenon in Xbox 360 could match that DP figure with its SP rate
>being 76.8 Gflops vs Cell's 204.8 so it doesn't look so outclassed as one would
>think given Cell's hype. I have also heard development Cell kits are only at 2.4
>Ghz. Anyway they both sound like great distributed computing clients I hope Sony
>and Microsoft allow them to be used in that ancillary fashion.
>

Actually considering I2/P5 will be/are dual-core they only need 2.4 Ghz per chip and x86 4.8 Ghz per dual-core chip which they are all knocking on.