HBM3 stacks
The memory behind NVIDIA H100: 16GB eight-high and 24GB twelve-high HBM3 stacks at 6.4 Gb/s and 819 GB/s, by maker.
All figures describe one stack. Historical catalog bins and planned configurations retain their source status.
| Samsung HBM3 24GB | Samsung1 | HBM31 | 121 | 241 | Up to 6.41 | Up to 8191 | Production reported2 | 2026-11-11 |
|---|---|---|---|---|---|---|---|---|
| SK hynix HBM3 24GB | SK hynix1 | HBM31 | 122 | 242 | Up to 6.42 | Up to 8192 | Sampling1 | 2026-11-11 |
| Samsung HBM3 16GB | Samsung1 | HBM31 | 81 | 161 | Up to 6.41 | Up to 8191 | Production reported2 | 2026-11-11 |
| SK hynix HBM3 16GB | SK hynix1 | HBM31 | 82 | 162 | Up to 6.42 | Up to 8192 | Production reported3 | 2026-11-11 |
Field definitions and evidence policy · Complete dataset with provenance