HBM Inventor Criticizes Samsung's zHBM: Stacking Memory on GPU Causes Melting
zephyr_z9 · x · 2026-08-18
HBM inventor Kim Jung-ho publicly showcased his lab's tHBM flipped stack approach and criticized Samsung's proposed zHBM design. He argued that stacking memory on top of a hot GPU would cause the memory to melt, highlighting the fundamental physical bottlenecks of thermal management and power delivery in vertical stacking.
More from Infra
- DumpsterCluster: Serving LLaMA-70B on $60 GPUs — Oxford · 2026-08-18
- Running MiniMax H3 on Colab T4 by Splitting Pipeline Stages — james_hito · 2026-08-18
- Reddit proposes pooling consumer GPUs into time-shared mesh to run 1T+ models — aliljet · 2026-08-18
- Ant Group open-sources AReno: single-node toolkit for LLM RL post-training and serving — pmttyji · 2026-08-18
- Stop Indexing at Full Precision: Compressed Vectors Cut Storage by 60x — _reachsumit · 2026-08-18
- Red Hat Releases OGX Open-Source GenAI Application Server — _reachsumit · 2026-08-18