Model / Part Number: B3140H (900-9D3D4-00NN-HA0)

Brand: NVIDIA

Adapter Card : NVIDIA B3140H BlueField-3 SuperNIC, E-series HHHL, 400GbE (Default Mode) / NDR IB, Single-port QSFP112, PCIe Gen5.0 x16, 8x Arm Cores, 16GB Onboard DDR, Integrated BMC, Crypto Disabled

The NVIDIA B3140H BlueField-3 SuperNIC is a purpose-built network accelerator designed to supercharge hyperscale AI workloads, massively parallel computing, and enterprise cloud infrastructure. Operating over a high-speed Single-port QSFP112 interface, the B3140H delivers up to 400Gb/s Ethernet (default) or NDR InfiniBand connectivity between GPU server nodes, ensuring maximum efficiency and zero-bottleneck data throughput for large language model (LLM) training and AI inference.

Engineered on a Half-Height Half-Length (HHHL) E-Series form factor, this BlueField-3 SuperNIC integrates an 8-Core Arm processor with 16GB of onboard DDR memory and an integrated Baseboard Management Controller (BMC). By optimizing Remote Direct Memory Access over Converged Ethernet (RoCE) and InfiniBand transport, it enables secure multi-tenancy, performance isolation, and deterministic networking across modern AI cloud fabrics. It is fully compatible with 800G OSFP to 400G QSFP112 breakout optics (e.g., 2xSR4 / SR4) for seamless connection from 800G switches directly to 400G SuperNIC endpoints.

Key Features

• 400Gb/s High-Speed Connectivity: Supports 400GbE (default) and NDR InfiniBand speeds over a single QSFP112 port, backward compatible with 200G/100G/50G/25G rates.
• Hyperscale AI Acceleration: Purpose-built for GPU-to-GPU interconnectivity with optimized RoCE v2 and RDMA capabilities to maximize peak cluster performance.
• Integrated 8-Core Arm Subsystem: Features 8 Arm cores backed by 16GB onboard DDR memory to handle network telemetry, traffic shaping, and offloads locally.
• PCIe Gen 5.0 x16 Host Interface: Operates on PCIe 5.0 @ 32.0 GT/s across 16 lanes (backward compatible with PCIe 4.0/3.0) for maximum host interface throughput.
• Deterministic Cloud Performance: Enables secure multi-tenancy and job isolation to guarantee consistent network performance for concurrent AI workloads.
• Compact HHHL Form Factor: E-Series Half-Height Half-Length profile (68.90mm x 167.65mm) fits standard server chassis with integrated BMC management.

Technical Specifications