Back-end NICs per GPU: one 400G/800G on GB200/B300, two 800G ConnectX-9 on Vera Rubin NVL72; plus a front-end/storage NIC
1–2 per 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 | One per GPU through Blackwell (GB200 SuperPOD reference architecture). Two 800G ConnectX-9 per GPU on Vera Rubin NVL72 (NVIDIA Rubin platform blog: 1.6 Tb/s per GPU). |
| As of | 2025 |
| Source | NVIDIA GB200 SuperPOD reference architecture; NVIDIA Rubin platform blog · GB200 SuperPOD network-fabrics page (one back-end NIC per GPU); Rubin platform blog https://developer.nvidia.com/blog/inside-the-nvidia-rubin-platform-six-new-chips-one-ai-supercomputer/ (1.6 Tb/s of ConnectX-9 per GPU) |
| Review | checking…review by 2027-03-01 · fast cadence |
| Recorded changes | last 2026-10-16 · 3 revisions tracked |
| Claim id | back-end-supernic-provisioning-8-400g-800g-per |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.