scale-up (NVLink) domain size: HGX node, NVL72 rack, Rubin Ultra NVL576 across eight 72-GPU MGX racks, and Kyber NVL144 / eight-rack NVL1152
HGX 8; NVL72 72; Rubin Ultra NVL576 576/8 racks; Kyber NVL144 144/rack, NVL1152 1,152/8 racksforecastcontested
| Value kind | forecast — Forecasts are time-bound outlooks, not specifications; test decisions across plausible scenarios. |
|---|---|
| Caveat | Contested as of Aug 2026: SemiAnalysis (2026-07-05) reports Kyber NVL144 slipping to 2028 on PCB-midplane manufacturability, NVL576 delayed or volume-restricted on CPO maturity, the NVL72x2 copper stopgap cancelled, and CPO-NVSwitch pushed to Feynman; NVIDIA's same-week reply was 'our roadmap remains intact' with no SKU-level rebuttal. Keep 576/1152 as announced figures; do not schedule against them. |
| As of | 2026 |
| Source | NVIDIA / Tom's Hardware / The Register (CES 2026, GTC) |
| Review | checking…review by 2026-10-20 · standard cadence |
| Recorded changes | last 2026-08-31 · 3 revisions tracked |
| Claim id | scale-up-nvlink-domain-size-hgx-node-nvl72-rack |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.