MI455X
AMD's MI450-series AI GPU, the accelerator inside the Helios rack-scale system and the basis of the open-standards alternative built on OCP, UALink, and Ultra Ethernet.
Current numbers
~2.9 EF FP4AMD Helios (72× MI455X) rack-scale FP4 (1.4 EF FP8), 31 TB HBM4, ORW double-wide
432 GBMI455X per-accelerator HBM4 capacity: 432 GB