GB200 NVL72 heat split (HPE) — removed by liquid vs left on air per rack (~132 kW total)
~115 / ~17 kWobserved
| Value kind | observed — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range. |
|---|---|
| Caveat | HPE GB200-specific. Keep separate from the GB300 NVL72 split: Lenovo Press LP2357 puts GB300 on ~90% liquid / ~10% air — roughly 13.5 kW on air at 135 kW rack TDP and ~15.5 kW at the ~155 kW peak, with the NVLink switch trays moved fully to liquid. Size a residual-air path from the rack you actually name. |
| As of | 2025 |
| Source | HPE QuickSpecs (OEM 115/17 split); 132 kW all-in Vertiv/NVIDIA + 451 Research · Advanced Direct Liquid Cooling specification; 132 kW nominal rack TDP split into 115 kW liquid-cooled and 17 kW air-cooled |
| Review | checking…review by 2026-08-13 · standard cadence |
| Recorded changes | last 2026-07-07 · 2 revisions tracked |
| Claim id | nvl72-heat-split-removed-by-liquid-vs-left-on |
Where the guide uses it
- 2.7 Simulation-Driven Design & the Digital Twin as a Design-Validation Tool
- 5.4 Direct-to-Chip Liquid Cooling (DLC) — Architecture, Fluid & Thermal Design
- 6.5 Fire Detection, Suppression & Life-Safety
- 13.2 Documentation, Scripts & Acceptance Test Plans
← Full numbers register — every date-stamped figure in the guide, with revision history.