Capacitor energy storage in the rack's power supplies and power shelves, as NVIDIA states it: 65 J/GPU for GB300 NVL72 and 400 J/GPU for Vera Rubin NVL72, used to smooth fast power swings
~65–400 J/GPUobserved
| 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 | Design figures NVIDIA gives for two platforms, not independent field measurements. |
| As of | 2026-03-16 |
| Source | NVIDIA Technical Blog: GB300 NVL72, 65 joules/GPU (2025-07-28); Vera Rubin NVL72, 400 J per GPU of rack-level energy storage (Vera Rubin POD post, 2026-03-16, https://developer.nvidia.com/blog/nvidia-vera-rubin-pod-seven-chips-five-rack-scale-systems-one-ai-supercomputer/). · GB300 power-supply discussion; NVIDIA specifies 65 joules per GPU of capacitor energy storage. |
| Review | checking…review by 2027-03-16 · standard cadence |
| Recorded changes | last 2026-10-13 · 2 revisions tracked |
| Claim id | on-board-capacitance-shaping-the-sub-ms-edge-65 |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.