NVIDIA Spectrum-X SN5600 400GbE Ethernet AI Fabric Switch

The NVIDIA Spectrum-X SN5600 is a purpose-built 400GbE Ethernet switch designed specifically for AI data center fabrics. It delivers RoCE (RDMA over Converged Ethernet) optimization with adaptive routing capabilities, enabling low-latency, high-bandwidth interconnect for large-scale AI training and inference clusters. The architecture supports lossless Ethernet networking with priority flow control and congestion management tuned for collective communication patterns in distributed AI workloads.

This switch serves as a strategic alternative to InfiniBand for enterprises standardizing on Ethernet-based AI infrastructure. The Spectrum-X platform incorporates NVIDIA's custom silicon and software stack to minimize packet loss, reduce latency variance, and maximize throughput for all-reduce operations and gradient synchronization across hundreds of GPUs. It integrates with NVIDIA DCQM (Data Center Quartet Monitoring) and supports Cumulus Linux for operational flexibility.

Target deployments include hyperscale training clusters, multi-tenant AI service platforms, and research institutions scaling from initial GPU pods to production-grade fabric infrastructure. The SN5600 chassis accommodates high port density while maintaining the deterministic performance characteristics required by modern transformer model training and large language model fine-tuning operations.

Ideal for

• Large-scale distributed GPU training for foundation models and LLMs requiring sub-microsecond latency collective communication
• Multi-tenant AI inference clusters with QoS isolation and traffic shaping for concurrent workload serving
• High-performance computing research environments transitioning from InfiniBand to unified Ethernet fabric
• Enterprise data center consolidation combining AI training, batch analytics, and general compute on single Ethernet infrastructure
• Disaggregated GPU pools with dynamic scheduling across multiple AI application teams and projects
• Edge-to-cloud AI pipeline acceleration with deterministic backhaul for real-time model serving and federated learning

Technical specifications

Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.