Symbol E_facility
acility occurs above the fraction bar. The numerator is divided by the entire denominator below it.
Read this term in its guide →Published equation contexts
Why this formula appears here
Two ratios recur throughout this series, and both are simpler than their reputation suggests. Power usage effectiveness compares the total electricity a facility draws to the electricity that reaches the computing equipment itself: . The Green Grid, the industry consortium that introduced the metric in 2007 and later consolidated its guidance into a single reference document, defines it plainly: “PUE for a dedicated building is the total facility energy divided by the IT equipment energy. PUE is an end-user metric used to help improve energy efficiency in data center operations” [ 5 ] . An ideal value is 1.0, meaning every watt drawn by the site reaches the computing load;…
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Symbol E_IT
T occurs below the fraction bar. The quantity above the bar is divided by this expression; zero is excluded as a denominator.
Read this term in its guide →How to interpret it
With a fixed numerator, increasing a nonzero denominator reduces the fraction. Read it with the definitions, units, and assumptions supplied by the article.
Research cited beside this formula
Published contexts (1)
A symbol can carry a different meaning in another article. Each occurrence keeps its own guide and term definitions.
Equation 5 · Datacenters
AI Datacenter Power and Cooling: A First-Principles Introduction
This equation states an equality: the expressions on both sides have the same value under the article’s assumptions.
Two ratios recur throughout this series, and both are simpler than their reputation suggests. Power usage effectiveness compares the total electricity a facility draws to the electricity that reaches the computing equipment itself: . The Green Grid, the industry consortium that introduced the metric in 2007 and later consolidated its guidance into a single reference document, defines it plainly: “PUE for a dedicated building is the total facility energy divided by the IT equipment energy. PUE is an end-user metric used to help improve energy efficiency in data center operations” [ 5 ] . An ideal value is 1.0, meaning every watt drawn by the site reaches the computing load;…
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