NVIDIA · Blackwell
NVIDIA GB200 NVL72
Rack-scale liquid-cooled Blackwell system with 72 GPUs connected as one NVLink domain. Widely deployed reference for 2025–2026 AI factories.
Rack-scale specification
- GPU count
- 72
- GPU
- Blackwell B200 (GB200 Grace Blackwell Superchip)
- CPU count
- 36
- CPU
- NVIDIA Grace CPU
- Cooling architecture
- Direct-to-chip liquid cooled (rack-scale)
- Rack architecture
- NVL72 — 72-GPU NVLink domain, single rack
- Networking family
- NVIDIA Quantum-X800 InfiniBand or Spectrum-X Ethernet + BlueField-3
- Last updated
- 2026-08
Cooling options
- Direct liquid coolingREFERENCE ARCHITECTURE
Rack is liquid cooled in the published reference architecture. CDU, manifold and QD packages are required.
- Hybrid liquid + airSUPPORTED OPTION
Residual air cooling is still required for in-rack components not on the liquid loop. Size residual air load with the provider.
- Air coolingNOT APPROPRIATE BASED ON AVAILABLE DATA
No air-cooled facility configuration for this rack platform is documented in the available official material.
Approximate module sizing
| Module | Design rack power | Approx. racks | Basis |
|---|---|---|---|
| 2.5 MW | 120 kW | 21 | Design calculation, not a guaranteed physical rack count |
| 5 MW | 120 kW | 42 | Design calculation, not a guaranteed physical rack count |
| 10 MW | 120 kW | 84 | Design calculation, not a guaranteed physical rack count |
| 20 MW | 120 kW | 167 | Design calculation, not a guaranteed physical rack count |
Facility power requirement
Approx. 120 kW per rack (design reference)
OFFICIAL NVIDIA SOURCE · SOURCE QUALITY HIGH
Source: NVIDIA GB200 NVL72 reference architecture
Document: NVIDIA GB200 NVL72 reference architecture
Source date: 2026-02
What this determines
- Liquid cooling distribution required (CDU + manifold + QD).
- Rack-scale NVLink domain — rack cannot be split across rooms.
- High-density busway and rack PDU selection driven by rack facility power.