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In computing, performance per watt is a measure of the energy efficiency of a particular computer architecture or computer hardware. Literally, it measures the rate of computation that can be delivered by a computer for every watt of power consumed. This rate is typically measured by performance on the LINPACK benchmark when trying to compare between computing systems. System designers building parallel computers, such as Google's hardware, pick CPUs based on their performance per watt of power, because the cost of powering the CPU outweighs the cost of the CPU itself.

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  • Rendiment per watt
  • Performance per watt
  • Performance par watt
  • 效能功耗比
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  • En computació, anomenem rendiment per watt (performance per watt) a la mesura d'eficiència energètica d'una arquitectura de computadors o hardware. Literalment, es mesura la ràtio de computació que pot treure un ordinador o computador per cada watt d'energia que consumeix. Els dissenyadors de sistemes construeixen computadors que treballen en paral·lel, com ara el dels centres de processament de dades (CPD) de Google, agafant processadors basats en el seu rendiment per watt, donat que el cost de la potència que consumiran sobrepassa el cost del processador per si mateix.
  • In computing, performance per watt is a measure of the energy efficiency of a particular computer architecture or computer hardware. Literally, it measures the rate of computation that can be delivered by a computer for every watt of power consumed. This rate is typically measured by performance on the LINPACK benchmark when trying to compare between computing systems. System designers building parallel computers, such as Google's hardware, pick CPUs based on their performance per watt of power, because the cost of powering the CPU outweighs the cost of the CPU itself.
  • En informatique, la performance par watt est une mesure de l'efficacité énergétique d'un ordinateur. Celle-ci mesure la puissance de calcul délivrée par un ordinateur pour chaque watt consommé. Le terme de performance n'est pas objectif, puisqu'il dépend du type de charge de travail demandé. Cependant, la liste Green 500 classant les supercalculateurs les plus efficaces utilise un seul test de performance.
  • 效能功耗比(Performance per watt)是一種測量计算机系统结构或电脑硬件能量轉換效率的方法。效能功耗比有非常多種算法,不過大多使用熱能來計算。 所使用的性能和功耗指標取決於定義; 合理的性能衡量標準是FLOPS,MIPS或任何性能基準的得分。取決於度量的目的,可以採用幾種用電量度量; 例如,度量標準可能只考慮直接傳遞給機器的電力,而另一個可能包括運行計算機所需的全部電力,例如冷卻和監控系統。功率測量通常是運行基準時使用的平均功率,但也可以採用其他功率使用度量(例如峰值功率,空閒功率)。 例如,早期的UNIVAC I計算機每瓦特秒執行約0.015次操作(執行每秒1,905次操作(OPS),同時消耗125千瓦)。2005年發布的4 FR550核心版本的芯片上的富士通 FR-V VLIW / 并行向量處理器 系統執行51 Giga-OPS功耗為3瓦,每瓦功率為170億次。這是54年來超過一萬億次的改善。 計算機使用的大部分功率都轉換為熱量,因此需要較少瓦特來完成工作的系統將需要較少的冷卻來維持給定的工作溫度。降低冷卻需求可以使計算機更安靜。降低能耗還可以降低運行成本,並減少為計算機供電帶來的環境影響(請參閱綠色計算)。如果安裝在氣候控制有限的地方,較低功率的計算機將在較低的溫度下運行,這可能使其更加可靠。在氣候控制的環境中,減少直接用電也可能節省氣候控制能源。
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