AI-driven data centers evolve from single-chip to heterogeneous multi-GPU architectures. High-speed optical interconnects enable scalability, while silicon photonics and co-packaged optics boost bandwidth and energy efficiency amid modular, ecosystem-based competition. NVIDIA's latest AI platforms—including B200, B300, GB200, and GB300—introduce cluster interconnect designs that combine NVLink fabrics, high-performance NICs, and large-scale switching networks. This article explores how these technologies work together, from node-level GPU communication to. Intra-rack interconnects primarily address communication requirements within a single server rack, connecting multiple compute nodes (servers) or accelerator resources inside the rack. Shift from single‑node to. With low latency, massive networking bandwidth, and all-to-all connectivity, the sixth generation NVIDIA NVLink™ and NVLink Switch are designed to accelerate training and inference for faster reasoning and agentic AI workloads. The sixth-generation NVLink enables 3. This shift is pushing optical interconnect.
[PDF Version]