Hardware Datasheet · Networking
NVIDIA Networking
NVIDIA Quantum-2 QM9790 NDR 400G Unmanaged InfiniBand Switch
Externally managed NDR 400G spine for large UFM-orchestrated GPU fabrics.
Overview
The Quantum-2 QM9790 is a 1U externally managed NDR InfiniBand switch with 64 ports of 400Gb/s on 32 OSFP cages, designed for large fat-tree fabrics orchestrated by NVIDIA Unified Fabric Manager. Nexus Compute specifies, configures, and validates each QM9790 with the appropriate airflow and firmware, delivered warranty-backed through NVIDIA-authorized channels.
Specifications
| Switch ASIC | NVIDIA Quantum-2 |
| Ports | 64x NDR 400Gb/s (32x OSFP), to 128x NDR200 |
| Aggregate Throughput | 51.2 Tb/s bidirectional |
| Management | Externally managed via NVIDIA UFM |
| In-Network Computing | SHARPv3 collective acceleration |
| Adaptive Routing | Hardware adaptive routing and congestion control |
| Form Factor | 1U rack-mount |
| Power / Airflow | Dual hot-swap PSUs, P2C or C2P airflow option |
| Warranty | Manufacturer-backed via authorized channels |
Typical Use Cases
- ·Spine tier of large fat-tree GPU fabrics
- ·UFM-managed multi-rack training clusters
- ·Lossless backbone for distributed training
- ·Telemetry-rich production AI infrastructure
Industries
Warranty & Support
Supplied through authorized channels with full manufacturer warranty. On-site, next-business-day support options available. Every system is configured, tested, and documented before delivery, with asset and warranty records provided for enterprise audit requirements.
Request a tailored quote
Configurations are tailored per engagement — contact us for pricing and lead times.
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Specifications are indicative and configured to each engagement. All product names, logos, and trademarks are the property of their respective owners. Nexus Compute is an independent enterprise hardware supplier.