HPE P45641-B21 InfiniBand 400Gb/s 1-Port NEAT Ethernet Adapter

Detailed Specifications

The HPE P45641-B21 is a high-performance InfiniBand Host Bus Adapter designed for demanding high-performance computing (HPC) and artificial intelligence (AI) workloads. As a single-port adapter leveraging the NVIDIA Quantum-2 InfiniBand architecture, it solves critical bottlenecks by providing an ultra-low latency, high-bandwidth interconnect solution for compatible HPE ProLiant, Apollo, and Cray servers. It is engineered for environments where rapid data transfer and processing are paramount. This adapter utilizes NVIDIA ConnectX-7 smart host channel adapter (HCA) technology to deliver a theoretical throughput of up to 400Gb/s. Its PCIe 5.0 x16 host interface ensures maximum bandwidth between the server's CPU and the network fabric, which is essential for accelerating complex simulations and data-intensive AI models. The integration of hardware-based congestion control further enhances performance by ensuring reliable data delivery under heavy load. Physically, the P45641-B21 is a plug-in card designed for a PCIe Gen5 x16 slot. Its OSFP (Octal Small Form Factor Pluggable) port provides connectivity to the latest generation of high-speed InfiniBand switches and cables. Management and deployment are streamlined through native integration within the HPE server ecosystem, offering a single point of support for the entire compute and networking solution.