NVIDIA DGX SuperPOD B300 Spectrum-4 Ethernet Reference Architecture
Type: Reference Architecture Tags: NVIDIA, DGX SuperPOD, DGX B300, Spectrum-4, Spectrum-X, DC Busbar, Blackwell, InfiniBand, Mission Control, AI factory Related: NVIDIA-DGX-SuperPOD, NVIDIA-DGX-B300, NVIDIA-DGX-B200, NVIDIA-Blackwell-Architecture, NVIDIA-Spectrum-X, NVIDIA-Spectrum-X-Validated-Solution-Stack, NVIDIA-Quantum-X800-InfiniBand, NVIDIA-Quantum-InfiniBand, NVIDIA-Mission-Control, NVIDIA-Base-Command-Manager, NVIDIA-Run-ai, NVIDIA-AI-Enterprise, NGC, NVIDIA-Certified-Storage, NVIDIA-Enterprise-AI-Factory Sources: https://docs.nvidia.com/dgx-superpod/reference-architecture/scalable-infrastructure-b300/latest/index.html, https://docs.nvidia.com/dgx-superpod/reference-architecture/scalable-infrastructure-b300/latest/abstract.html, https://docs.nvidia.com/dgx-superpod/reference-architecture/scalable-infrastructure-b300/latest/dgx-superpod-components.html, https://docs.nvidia.com/dgx-superpod/reference-architecture/scalable-infrastructure-b300/latest/network-fabrics.html, https://docs.nvidia.com/dgx-superpod/reference-architecture/scalable-infrastructure-b300/latest/dgx-software.html Last Updated: 2026-05-09
Summary
NVIDIA DGX SuperPOD B300 Spectrum-4 Ethernet Reference Architecture is the DGX B300 SuperPOD design focused on Spectrum-4/Spectrum-X Ethernet and DC busbar power for modern, power-efficient data centers. It is a DGX SuperPOD reference architecture for building next-generation AI factories with NVIDIA-DGX-B300, NVIDIA XDR InfiniBand, Spectrum-X/Spectrum-4 Ethernet, NVLink, NVIDIA-Mission-Control, NVIDIA-AI-Enterprise, CUDA, Magnum IO, storage guidance, and NVIDIA Enterprise Support.
Detail
Purpose
Use this page for the DGX B300 SuperPOD reference architecture document titled “NVIDIA SuperPOD DGX B300 Systems, Spectrum-4 Ethernet and DC Busbar Power Reference Architecture.” Use NVIDIA-DGX-SuperPOD for the generic SuperPOD concept and NVIDIA-DGX-B300 for the DGX B300 system identity.
Architecture notes
- Document number RA-11337-001 V01; publication date 2025-05-29; docs last updated 2025-11-19.
- Based on DGX B300 systems powered by Blackwell GPUs.
- Built around scalable units; each SU contains 64 DGX B300 systems for rapid deployment of multiple SuperPOD sizes.
- The RA discusses SU design, InfiniBand and Ethernet fabric topologies, storage specifications, rack layouts, wiring, and power design.
- The DC busbar version is the focus for modern high-density, power-efficient data centers.
- DGX B300 system highlights include DC busbar powered MGX-rack capable design, alternate AC PSU appliance design, 72 PFLOPS FP8 training, 144 PFLOPS FP4 inference, fifth-generation NVLink, and 2.1 TB aggregate HBM3e memory.
- The architecture includes high-performance InfiniBand, Spectrum-X/Spectrum-4 Ethernet, NVLink, and NVIDIA-Mission-Control as core technologies.
Fabrics and operations
The docs describe four network fabrics: compute fabric, storage fabric, in-band Ethernet network, and out-of-band management network. The Ethernet fabric is segmented with VXLAN/EVPN for control and admin isolation. The in-band management network connects cluster services, lower-speed NFS storage, uplinks to services such as NGC/code/data sources, and user access to Slurm and Kubernetes services.
Software stack
The software stack includes NVIDIA-Mission-Control, NVIDIA-Base-Command-Manager, NVIDIA-Run-ai, NGC, and NVIDIA-AI-Enterprise. Mission Control is the standard for every DGX SuperPOD with DGX B300 and includes Base Command Manager and Run:ai functionality as part of integrated software delivery.
Connections
- NVIDIA-DGX-SuperPOD - parent SuperPOD architecture family.
- NVIDIA-DGX-B300 - compute system used by this RA.
- NVIDIA-DGX-B200 - predecessor DGX Blackwell system for comparison.
- NVIDIA-Blackwell-Architecture - GPU architecture foundation.
- NVIDIA-Spectrum-X - Ethernet AI networking platform in the design.
- NVIDIA-Spectrum-X-Validated-Solution-Stack - version compatibility for current Spectrum-X deployments.
- NVIDIA-Quantum-X800-InfiniBand and NVIDIA-Quantum-InfiniBand - InfiniBand compute/storage fabric context.
- NVIDIA-Mission-Control - required administration and operations plane.
- NVIDIA-Base-Command-Manager and NVIDIA-Run-ai - cluster management and workload orchestration included through Mission Control.
- NVIDIA-AI-Enterprise - enterprise AI software and support layer.
- NGC - GPU-optimized containers and software catalog.
- NVIDIA-Certified-Storage - storage partner validation is part of the SuperPOD environment.
- NVIDIA-Enterprise-AI-Factory - the RA is a practical AI factory build pattern.
Source Excerpts
- NVIDIA describes this DGX SuperPOD RA as a next-generation AI factory design based on DGX B300 systems.
- The docs identify DC busbar power as the focus of this RA for modern, power-efficient data centers.
- The DGX SuperPOD software page says Mission Control is the standard for every DGX SuperPOD with DGX B300.