B200 and GB200 usable memory: distinct GPU product profiles
B200: 180 GB; GB200: 186 GB usableobserved
| Value kind | observed — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range. |
|---|---|
| Scope | GB200: 372 GB usable memory per two-GPU superchip / 2 = 186 GB per GPU. NVIDIA’s B200 MIG table identifies its full profile as 7g.180gb. These totals do not establish identical partition geometries. |
| As of | 2026 |
| Source | NVIDIA MIG User Guide, supported profiles (B200 180 GB product, 7g.180gb); NVIDIA GB200 NVL72 specifications (13.4 TB HBM3e across 72 GPUs) · B200 profile table (7g.180gb); GB200 NVL72 spec table: 13.4 TB HBM3e / 72 = 186 GB |
| Review | checking…review by 2026-12-08 · standard cadence |
| Recorded changes | last 2026-10-16 · 4 revisions tracked |
| Claim id | hbm-per-blackwell-gpu-available-to-partition |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.