AMD takes the wraps off its Instinct MI455X AI accelerator — CDNA 5 and Helios rack-scale architecture combine to take the fight to Nvidia in the data center

Tom's Hardware
Jul 23, 2026, 2:05 pm94 ptsTrending
At AMD’s Advancing AI event this week, the company revealed more details of its upcoming MI455X GPU and the Helios rack-scale architecture that will join 72 of those GPUs into a coherent accelerator—the largest such system that AMD has built so far and its first to truly compete with Nvidia’s NVL72…

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