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AMD's Instinct MI455X: Aiming for the Sun

Hacker News Top · 2026-07-24 Cached

AMD introduces the Instinct MI455X GPU, its first AI accelerator designed for rack-scale deployments, built on the new CDNA5 architecture with up to 40.26 PFLOP of performance, 432 GB of HBM4 memory, and the Helios rack-scale solution enabling 72-GPU pods.

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