PUE & Data-Center Efficiency
Concept
Hardware & Compute
Power Usage Effectiveness: how much electricity feeds chips vs overhead.
You're looking at a concept explainer: what this term means in plain English, and the records it ties together.
PUE divides total facility power by IT power — 2.0 means half the electricity runs cooling and losses; leading hyperscale halls report ~1.1. Liquid cooling improves it further, but a falling PUE on an exploding IT load still means soaring total demand — efficiency and consumption rising together, the Jevons pattern in miniature. Water usage (WUE) is the companion metric communities scrutinize.
How this connects to the rest of the stack
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Sources
Google data-center efficiency ↗
Record reviewed as of 2026-01-15 — see Methodology.