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Dennard scaling : ウィキペディア英語版
Dennard scaling
Dennard scaling, also known as MOSFET scaling, is a scaling law based on a 1974 paper co-authored by Robert H. Dennard, after whom it is named. Originally formulated for MOSFETs, it states, roughly, that as transistors get smaller their power density stays constant, so that the power use stays in proportion with area: both voltage and current scale (downward) with length.
==Relation with Moore's law and computing performance==

Dennard scaling relates Moore's law (which postulates a reduction in the size of transistors leading to more and more transistors per chip at the cost-effective optimum) and the claims that the performance per watt of computing is growing exponentially at roughly the same rate. This is closely related to Koomey's law, which says that performance per watt in computing has been doubling every 1.57 years (somewhat faster than the doubling period of Moore's law, which is about 1.8 years).

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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