Mellanox NVIDIA QM9790 – 64× 400 Gb/s NDR InfiniBand Switch

Guide price: Price range: £16,270.32 through £19,345.45 Ex. VAT

Product Overview

The QM9790 series delivers ultra-high-density 400 Gb/s NDR InfiniBand switching in a 1U rack-mount design, built on the Quantum-2 platform. It is engineered to power large-scale HPC, AI/ML clusters, storage backbones and data-centre fabrics demanding maximum bandwidth, minimal latency and full RDMA/NDR capabilities.

Ideal deployment/environment: Large HPC clusters, AI/ML training farms, high-performance storage networks and cloud-scale fabrics needing dense 400 Gb/s connectivity, RDMA-based data movement and network-accelerated compute. The QM9790 series excels in environments requiring maximal bandwidth, minimal latency, scalability across many nodes, and flexible topology design.

Key Features

  • 64 × 400 Gb/s NDR InfiniBand ports via 32 OSFP cages
  • Aggregate bidirectional throughput up to 51.2 Tb/s
  • Support for lower link speeds (200/100/56/40 Gb/s) for backward compatibility and flexible deployment
  • Port-splitting options for 128 × 200 Gb/s (NDR200) links for high-density or tiered topology designs
  • Support for advanced in-network computing via SHARPv3, enabling scalable collective operations, reduced latency and improved efficiency in distributed workloads
  • Full RDMA support, adaptive routing, congestion control, QoS and virtual-lane mapping — enabling robust, low-latency, high-throughput fabrics for HPC, AI, storage and cloud environments
  • 1U chassis, hot-swappable redundant power supplies and fans, with configurable airflow (front-to-rear or rear-to-front) depending on rack cooling design

Specification

Additional information

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Documentation