Sunday, June 11, 2006

Theory of relativity applied on processor power consumption

As you know when you go slow, classical Newtonian dynamics is enough to describe everything you want to know around. But at the speeds close to the ultimate speed of light, things seems different and you need special theory of relativity to know what goes on. Analogy applies very well in the area of processor power consumption.
"We do not have industry-standard benchmarks for performance-per-watt," he said, adding that it might be some time before those are developed.
At low clock speeds we all know that for more performance you need a more power to consume. So, now defunct Pentium was established in Newtonian manner . But it recently has hit in performance wall (like material objects can't punch through light speed wall) and we need the relativity theory applied in marketing to boost a new revenue growth.

Thus, things are not so simple any more. When someone say processor power consumption is 80W that means nothing. But, if processor clock is say 2,93Ghz and its power consumption 80W that should mean it would run indefinitely at 2,93Ghz consuming no more than 80W. Right?
No, now that means that processor might run some time at 2,93Ghz and than will, due to thermal instabilities , switch alone to lower clock speed. Without acknowledging you about it.

Yes, that means just that. Your processor has its peak clock now. Not a fixed, max clock, as we previously used to assume.
However, when 2 or more cores drop in the game, you will need General theory of relativity only to decribe your PC performance, and no performance per watt benchmarks doesn't still exist.
Thus, average people will know about their PC performance the same abstract way like they know about Universe evolution in the tensor terms of General Relativity. Cheers. !

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