PUE range quoted for advanced liquid-cooled facilities in CIBSE Journal CPD Module 254 (October 2025)
1.05-1.15estimate
| Value kind | estimate — Interpret this value according to its displayed kind, scope, source, and as-of date. |
|---|---|
| Scope | No measured population of matched facilities supports an architecture-wide 1.05–1.15 range. It is practitioner commentary, not an annual guarantee. Climate and load bins, rack heat capture, power-chain losses and meter boundaries decide a project's result. |
| As of | 2025-10 |
| Source | CIBSE Journal, CPD Module 254, Liquid cooling in data centre applications (October 2025); SemiAnalysis, Datacenter Anatomy Part 2 (2025), secondary. A screening range quoted by practitioners, not an Uptime cooling-architecture statistic. · Module text: advanced liquid-cooled facilities are now hitting values in the 1.05 to 1.15 range |
| Review | checking…review by 2027-04-16 · fast cadence |
| Recorded changes | last 2026-10-16 · 3 revisions tracked |
| Claim id | pue-band-for-warm-water-direct-to-chip-liquid |
Where the guide uses it
- 15.1 Efficiency Metrics: PUE, WUE, ERF, REF & the Post-PUE Metric Stack
- 15.2 Energy Efficiency: Cooling, Free Cooling, Setpoints & Power-Chain Losses
← Full numbers register — every date-stamped figure in the guide, with revision history.