AMD's MI455X delivers 432GB HBM4, enough for trillion‑parameter model weights in one server
In a July 24th X post, AMD disclosed a new MI455X GPU that packs 432GB of HBM4, enough to store FP8 weights of a trillion‑parameter model in a single server.
By Ryan Merket · Published
Primary source: X
Why it matters
The MI455X’s 432 GB HBM4 memory could let a single server hold the FP8 weights of a trillion‑parameter model, potentially streamlining the deployment of ultra‑large AI systems and challenging Nvidia’s dominance in high‑memory GPUs.
Lysandre, an X user identified as Lysandre (@LysandreJik), announced on July 24th that AMD has released a new GPU, the MI455X, equipped with 432 GB of HBM4 memory. The post noted that four of these GPUs in a single chassis would deliver 1.7 TB of high‑bandwidth memory – a figure that exceeds the combined memory of five Nvidia H100 GPUs, each stocked with 80 GB of HBM2e.…
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