NVIDIA GB200 NVL72
The rack that is the computer: 72 GPUs, one NVLink domain, 120 kW, liquid only.
You're looking at a system record: an assembled machine — a server or a whole rack — with what's inside it and where it's deployed.
The NVL72 abandoned the server as the unit of design: 18 compute trays (36 Grace CPUs + 72 B200 GPUs) and 9 NVLink-switch trays joined by a copper spine into a single 72-GPU coherent domain with 13.4 TB of HBM3E — presented to software as one enormous accelerator. At ~120 kW it made direct liquid cooling and 1,400 A busbars mandatory, forcing the data-center redesigns this site documents. GB300 NVL72 (Blackwell Ultra) is its 2025–26 successor.
Specifications & key facts
Each figure is labeled by basis: vendor spec, vendor claim, reported, estimate, or official. "Not publicly disclosed" means exactly that — we never invent values.
Overview
Memory
Compute
Power
How this connects to the rest of the stack
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Designed by
Interconnect & networking
Cooling
Contains
Deployed at
Competes with
Sources
Record reviewed as of 2026-01-15 — see Methodology.