AMD MI400 + Helios Rack: 432GB HBM4 + 260 TB/s UALoF Open Interconnect
In 2026, AMD launched MI400 (CDNA Next) + Helios 72-GPU rack, AMD's flagship solution targeting NVIDIA NVL72. This article analyzes MI400's key specifications, the Helios rack's open interconnect (UALoF) strategy, and a comparison with Rubin R200.