AMD MI455X
AMD · 2026-07 · Instinct
- 显存
- 432 GB
- 带宽
- 23.3 TB/s
- FP16
- 5,030
- FP8
- 20,130
AMD's MI400-series flagship, launched at Advancing AI on July 23, 2026 with Helios racks already in production. 432GB HBM4. Per-GPU figures are MXFP4, MXFP8 and dense BF16 peaks; AMD publishes the rack numbers of 2.9 exaflops FP4, 1.4 exaflops FP8, 31TB HBM4 and 1.7 PB/s across 72 GPUs. OpenAI expects to bring Helios online starting in Q4 2026.
FP4 40,260 · TDP —
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