
Blackwell Ultra
NVIDIA HGX B300
Large-scale training and high-throughput inference for reasoning models.
Designed for
- Large-scale LLM training
- High-throughput inference
- Reasoning and long-context models
- Multi-node clusters
Best suited to
- Frontier-scale training programmes
- Inference fleets serving very large models
- Organisations standardising on Blackwell Ultra
- GPUs per system
- 8 (HGX baseboard)
- Memory per GPU
- Approx. 288 GB HBM3e (indicative)
- Interconnect
- NVLink all-to-all across 8 GPUs
- Form factor
- HGX 8-GPU server, air or liquid cooled
Indicative, based on NVIDIA published specifications. Final configuration determined per project.









