Arista 7800R3 Series AI Spine Switch

The Arista 7800R3 Series AI Spine Switch is a purpose-built fabric switch engineered for AI and GPU cluster interconnect at hyperscale. The 7816 variant delivers ultra-dense 400G and 800G port configurations optimized for collective communication patterns in large-scale machine learning training environments, offering non-blocking throughput and low-latency switching across thousands of GPU nodes.

Designed for modern data center architectures supporting transformer model training, fine-tuning, and inference workloads, this switch provides the high-radix switching capacity required for all-reduce operations, gradient synchronization, and distributed tensor computations. The 7800R3 line integrates Arista's CloudVision platform for unified management and observability across fabric deployments.

Deployed in tier-1 cloud platforms and enterprise AI infrastructure, the 7816-CH addresses acute interconnect bottlenecks in GPU-dense environments where network performance directly impacts model training throughput and accelerator utilization.

Ideal for

• Large-scale distributed AI/ML training clusters (100+ GPU nodes) requiring low-latency collective communication
• Multi-tenant GPU cloud platforms with dynamic workload scheduling and traffic isolation
• High-performance computing (HPC) centers running weather modeling, molecular dynamics, and scientific simulations
• Transformer model training and fine-tuning at 10B–trillion parameter scale
• Inference serving infrastructure with real-time model pipeline orchestration
• Enterprise data centers consolidating GPU compute for generative AI workloads

Technical specifications

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