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NVNEXUS

NVIDIA Quantum-X800 InfiniBand Platform

800 Gb/s InfiniBand switching for trillion-parameter AI factories. The end-to-end fabric used in Vera Rubin and Blackwell-class systems.

Description

Overview

NVIDIA Quantum-X800 is the world’s first end-to-end 800 Gb/s InfiniBand networking platform. Built around the Quantum Q3400 switch and ConnectX-8 SuperNIC, Quantum-X800 delivers 5x the bandwidth and 9x higher in-network compute capability of the previous generation, scaling AI factories to hundreds of thousands of GPUs.

Key Features

  • Quantum Q3400 Switch: 144 ports of 800 Gb/s InfiniBand
  • SHARPv4: In-network reductions for collective communication
  • Adaptive Routing & Self-Healing: Maximum fabric utilization at scale
  • End-to-End Stack: Switches, SuperNICs, cables, and NVIDIA UFM management

Technical Specifications

Specification Details
Switch Bandwidth 115.2 Tb/s
Ports per Switch 144 x 800 Gb/s
Generation InfiniBand XDR
In-Network Compute SHARPv4 (FP8/BF16/FP32)
Form Factor 1U / 2U managed switch

Ideal Use Cases

  • Large-scale GPU cluster scale-out fabrics
  • HPC and scientific computing
  • AI training jobs spanning thousands of GPUs
  • Sovereign AI and national supercomputing centers

Why Choose Quantum-X800?

InfiniBand remains the gold standard for tightly-coupled AI training. We help architect Quantum-X800 fabrics, plan cabling and optical strategies, and integrate UFM with your monitoring stack.

Interested? Contact us for personalized pricing and configuration options.