NVIDIA B300
NVIDIA · Blackwell Ultra
Shipping (HGX B300 available now)
traininginferenceflagshipblackwell-ultrafp4hbm3e
Memory
288GB HBM3e
FP8 TFLOPS
5000
Power
1200W
Released
May 1, 2026
Technical Specifications
| Manufacturer | NVIDIA |
|---|---|
| Architecture | Blackwell Ultra |
| Memory | 288GB HBM3e |
| Memory Bandwidth | 8.0 TB/s |
| FP16 TFLOPS | 2500 |
| FP8 TFLOPS | 5000 |
| FP4 TFLOPS | 10000 |
| Interconnect | NVLink5 (1.8TB/s) |
| Power (TDP) | 1200W |
| Released | May 1, 2026 |
| Status | Shipping (HGX B300 available now) |
Availability
Shipping now — HGX B300 platform in production. Current high-end shipping GPU, successor to B200 with 50% more HBM3e memory (288GB vs 192GB). Increased compute density for frontier-scale training.