| Type | Release | Max data rate speed per pin (Gbit/s) | Stack | Max capacity (Number of dies × Die capacity = GByte) | Max data rate (GByte/s) |
|---|---|---|---|---|---|
| HBM 1 | Oct 2013 | 1 | 8×128 bit | 4×1 = 4 | 128 |
| HBM 2 | Jan 2016 | 2.4 | 8×1 = 8 | 307 | 307 |
| HBM 2E | Aug 2019 | 3.6 | 12×2 = 24 | 461 | 461 |
| HBM 3 | Jan 2022 | 6.4 | 16×64 bit | 12×2 = 24 | 819 |
| HBM 3E | May 2023 | 9.8 | 16×3 = 48 | 1229 | 1229 |
| HBM 4 | 2026 | 6.4 | 32×64 bit | 16×4 = 64 | 1638 |