Communication latency is the primary hurdle for LLM training. In early 2026, 1.6T switches officially entered commercial use.

Jensen Huang unveiled the next-gen Rubin architecture at CES 2026, pushing AI inference efficiency to new heights with HBM4 memory.

Compares H100, H200, and B200 to guide GPU selection based on budget and workload. Highlights that interconnect and supply chain are also critical for AI cluster performance.