NVIDIA HGX B300
Build Your Own Blackwell Ultra AI Server
The NVIDIA HGX B300 is a GPU baseboard platform that gives OEM server manufacturers the flexibility to build custom AI servers around NVIDIA's most powerful GPU architecture. It delivers the same GPU compute as the DGX line while letting you choose your own CPU, chassis, cooling, and storage configuration.
From $485,000 (baseboard)
Why the NVIDIA HGX B300
With 2.3TB total HBM3e GPU memory + OEM-configured system RAM and 72 PetaFLOPS FP4, 36 PFLOPS FP8 performance, the NVIDIA HGX B300 handles workloads that range from AI model training and inference to scientific computing and real-time visualization.
288GB HBM3e per GPU - highest memory per GPU available
Same GPU architecture as DGX B300 at baseboard level
Flexibility to choose your own CPU, chassis, and cooling
OEM ecosystem with Dell, HPE, Lenovo, Supermicro, and more
5th-gen NVLink 1.8TB/s for all-reduce operations
Can be integrated into liquid or air-cooled chassis
Technical Specifications
Complete hardware specifications for the NVIDIA HGX B300.
| GPU | 8x NVIDIA B300 SXM5 |
| GPU Count | 8 |
| CPU | OEM-selected (Intel Xeon or AMD EPYC) |
| Memory | 2.3TB total HBM3e GPU memory + OEM-configured system RAM |
| Storage | OEM-configured |
| Networking | OEM-configured (typically 8x 400GbE ConnectX-7) |
| Interconnect | 5th-gen NVLink (1.8TB/s GPU-to-GPU via NVSwitch) |
| Performance | 72 PetaFLOPS FP4, 36 PFLOPS FP8 |
| Power | Approximately 10.5 kW (baseboard only) |
| Form Factor | HGX Baseboard (OEM integrates into server chassis) |
| Operating System | OEM-selected Linux distribution |
| Software Stack | NVIDIA AI Enterprise compatible, CUDA, cuDNN, NCCL |
What You Can Do with the NVIDIA HGX B300
From AI model training to production inference, the NVIDIA HGX B300 handles a wide range of demanding workloads.
- Custom AI server builds for specific datacenter requirements
- Hyperscaler and cloud provider infrastructure
- Sovereign AI cloud deployments
- Research institutions needing maximum memory per GPU
- Large-scale training clusters
- Custom cooling and chassis requirements
Why Buy the NVIDIA HGX B300 from Petronella
We do not just sell hardware. We design, deploy, and manage your AI infrastructure with compliance built in from day one. Our entire team is CMMC-RP certified.
Full server integration and configuration services
OEM partner selection and procurement assistance
Custom chassis and cooling design for your datacenter
Compliance documentation for regulated environments
Cluster design and multi-node networking architecture
Performance validation and burn-in testing
Compliance-Ready AI Infrastructure
Every NVIDIA HGX B300 deployment from Petronella includes compliance documentation and security hardening for your regulatory requirements. Our CMMC-RP certified team ensures your AI infrastructure meets the standards your industry demands.
Petronella Technology Group deploys NVIDIA hardware with full compliance documentation, security hardening, and audit-ready configurations. Whether you operate in defense, healthcare, finance, or government, we ensure your AI systems meet the regulatory frameworks that apply to your organization. Our team holds CMMC-RP, CCNA, CWNE, and DFE certifications.
Explore Related NVIDIA Products
Compare the NVIDIA HGX B300 with other NVIDIA solutions to find the right fit for your workloads and budget.
Configure Your NVIDIA HGX B300
Talk to our NVIDIA specialists about the right configuration for your workloads, compliance requirements, and budget. We handle everything from procurement to deployment.