GB200 NVL72 coolant flow in vendor reference designs at roughly 12 °C rise
~110–140 L/min (vendor references at ~12 °C rise)observed
| 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. |
|---|---|
| Scope | The vendor-reference band is observed in QCT and nVent designs at roughly 12 °C rise. The guide's separate ~165–236 L/min water-property design-flow derivation uses a tighter 7–10 °C rise across ~115 kW; Clariant PG25 gives ~172–246 L/min at the same rise, roughly 4% more. |
| Caveat | QCT ≤130 L/min and nVent ~138 L/min are vendor-reference operating points; using the separate water-property guide band requires the guide's 7–10 °C design rise, while Clariant PG25 at the same rise gives the slightly higher ~172–246 L/min band. |
| As of | 2025 |
| Source | QCT QoolRack GB200 NVL72 reference (≤130 L/min); nVent (~138 L/min/rack) · QCT QoolRack PDF p.3: up to 130 L/min; nVent GB200 NVL72 CDU reference: approximately 138 L/min per rack |
| Review | checking…review by 2027-06-22 · slow cadence |
| Recorded changes | last 2026-08-22 · 4 revisions tracked |
| Claim id | gb200-nvl72-coolant-acceptance-envelope-and |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.