The NVIDIA Quantum-X800 Q3400-RA 4U switch adopts 200Gb/s per-channel SerDes technology.

It is equipped with 144 800Gb/s ports distributed across 72 Octal Small Form-factor Pluggable (OSFP)

module slots. The switch’s high-radix characteristics support a two-tier fat-tree topology, enabling

connectivity for up to 10,368 ConnectX-8 network adapters with minimal latency and optimal job

locality.

Product Features：

Unmatched Scale for AI: The NVIDIA Quantum-X800 switch doubles the speed of AI computing architectures and improves scalability by a factor of 5. A two-tier Quantum-X800 fat-tree topology supports more than 10,000 800Gb/s host connections.

Next-Generation In-Network Computing: The Quantum-X800 switch supports the Scalable Hierarchical Aggregation and Reduction Protocol (SHARP), which efficiently offloads compute operations to the network, delivering up to 9x performance gains. The 4th-Generation SHARP adds support for FP8 precision, as well as new collective operations such as ReduceScatter and ScatterGather.

Higher Effective Bandwidth and Performance Isolation: The Quantum-X800 switch supports Enhanced Adaptive Routing and Telemetry-Based Congestion Control. This achieves near-perfect effective bandwidth and enables performance isolation in multi-tenant and multi-job environments.