Feynman Ultra may hit 100 TB/s memory bandwidth via HBM5

zephyr_z9 · x · 2026-08-24

Based on a leaked roadmap, the Feynman Ultra quad-die could achieve 100 TB/s of memory bandwidth. A Samsung slide excerpt confirms HBM5 stacks at 6.4TB/s each, totaling 102.4 TB/s for 16 stacks. HBM4E is also confirmed at 16 Gbps.

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