NVIDIA/Mellanox Q3400-RA (920-9B36F-00RX-8S0) Quantum-X800 InfiniBand XDR Switch, Quantum-3 ASIC, 4U, 144 XDR Ports over 72 OSFP Cages, 8 Power Supplies (Power Cords Not Included), Standard Depth, Managed, C2P Airflow, Rail Kit, Quantum-3 Air Cooled

NVIDIA Q3400-RA (920-9B36F-00RX-8S0) Quantum-X800 InfiniBand XDR Switch, Powered by Quantum-3 ASIC, 4U, 144 XDR Ports over 72 OSFP Cages, 8 Power Supplies (Power Cords Not Included), Standard Depth, Managed, C2P Airflow, Rail Kit, Quantum-3 Air Cooled

The NVIDIA Q3400-RA Quantum-X800 InfiniBand XDR switch is built with 144 ports at 800Gb/s distributed across 72 octal small form-factor pluggable (OSFP) cages. It is an air-cooled switch powered by Quantum-3 ASIC designed for standard 19-inch rack cabinets. As the world’s only fully offloadable In-Network Computing platform, it provides ultra-low latency with highest port density and data throughput (delivering 144 ports of 800 Gb/s connectivity per switch). By leveraging hardware-based NVIDIA Scalable Hierarchical Aggregation and Reduction Protocol (SHARP) v4 and deep NCCL optimization, the Quantum-X800 switch offloads critical collective operations to the network, significantly accelerating application completion times while reducing operational complexity and cost.

Designed to power massive compute fabrics, the NVIDIA Quantum-X800 supports scale-out topologies of up to 10,368 NICs in a simple two-level fat-tree structure. It incorporates self-healing capabilities for fast fault recovery, adaptive routing, and telemetry-based congestion control to ensure peak throughput and strict performance isolation under extreme multi-tenant workloads. Furthermore, with dedicated UFM management ports and advanced power-efficiency features like low-power link states and power profiling, it optimizes energy consumption and data center management. The Q3400-RA Quantum-X800 is ideally suited for demanding generative AI training, large language model (LLM) inference, scientific research, and enterprise HPC environments.