{"product_id":"hpe-infiniband-xdr-pcie-gen6-x16-multi-hostsocket-direct-auxiliary-card-with-250mm-mcio-cable-kit-p81264-h21","title":"HPE InfiniBand XDR PCIe Gen6 x16 Multi Host\/Socket Direct Auxiliary Card with 250mm MCIO Cable Kit - P81264-H21","description":"\u003ch2\u003eHPE InfiniBand XDR PCIe Gen 6 Multi Host\/Socket Direct Auxiliary Card — P81264-H21\u003c\/h2\u003e\u003cp\u003eThe HPE P81264-H21 is an InfiniBand XDR PCIe Gen 6 x16 multi-host \/ socket-direct auxiliary card bundled with a 250mm MCIO cable kit. Designed for high-density GPU and compute node configurations, it enables socket-direct or multi-host InfiniBand XDR connectivity without consuming a standard PCIe slot, reducing fabric latency and improving GPU-to-fabric bandwidth in HPE AI infrastructure.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eInfiniBand XDR PCIe Gen 6 x16 auxiliary card for multi-host and socket-direct deployments\u003c\/li\u003e\n\u003cli\u003e250mm MCIO cable kit included for internal server connectivity to host PCIe Gen 6 fabric\u003c\/li\u003e\n\u003cli\u003eSocket-direct architecture minimizes hop latency between GPU and InfiniBand fabric\u003c\/li\u003e\n\u003cli\u003eDesigned for dense AI and HPC compute node configurations requiring high fabric density\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart Number: P81264-H21\u003c\/li\u003e\n\u003cli\u003eManufacturer: HPE\u003c\/li\u003e\n\u003cli\u003eType: InfiniBand XDR Auxiliary Card (Multi Host\/Socket Direct)\u003c\/li\u003e\n\u003cli\u003eHost Interface: PCIe Gen 6 x16\u003c\/li\u003e\n\u003cli\u003eCable Kit: 250mm MCIO cable included\u003c\/li\u003e\n\u003cli\u003eForm Factor: Auxiliary card (internal connectivity)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInterface Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHost Interface: PCI Express Gen 6 x16 via MCIO internal cable\u003c\/li\u003e\n\u003cli\u003eFabric Protocol: InfiniBand XDR\u003c\/li\u003e\n\u003cli\u003eConnectivity: Multi-host or socket-direct internal auxiliary card attachment\u003c\/li\u003e\n\u003cli\u003eCable: 250mm MCIO cable for server-internal PCIe Gen 6 routing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNetwork \u0026amp; Protocol Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eInfiniBand Standard: XDR (Extended Data Rate)\u003c\/li\u003e\n\u003cli\u003eTopology: Multi-host \/ socket-direct — multiple hosts or CPU sockets sharing fabric connection\u003c\/li\u003e\n\u003cli\u003eRDMA: Full InfiniBand RDMA support for MPI, NCCL, and storage fabric workloads\u003c\/li\u003e\n\u003cli\u003eLatency: Reduced fabric hop latency via socket-direct attachment vs. PCIe riser routing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eUse Cases\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDense AI GPU server configurations requiring socket-direct InfiniBand XDR connectivity\u003c\/li\u003e\n\u003cli\u003eMulti-host InfiniBand fabric sharing across multiple hosts or sockets in HPE AI platforms\u003c\/li\u003e\n\u003cli\u003eHPC compute nodes requiring internal PCIe Gen 6 InfiniBand routing via MCIO cable\u003c\/li\u003e\n\u003cli\u003eReducing PCIe switch hop latency in GPU-dense HPE ProLiant Gen11 AI servers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHPE ProLiant Gen11 AI and HPC compute nodes with PCIe Gen 6 x16 MCIO connectivity\u003c\/li\u003e\n\u003cli\u003eCompatible with InfiniBand XDR switch fabric infrastructure\u003c\/li\u003e\n\u003cli\u003eRequires MCIO-capable PCIe Gen 6 host platform for auxiliary card attachment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cdl\u003e\n\u003cdt\u003eWhat is a socket-direct InfiniBand configuration?\u003c\/dt\u003e\n\u003cdd\u003eSocket-direct connects the InfiniBand HCA directly to a CPU socket's PCIe lanes via an internal cable, bypassing the PCIe switch. This reduces latency for GPU-to-fabric communication and improves MPI and NCCL collective performance in multi-socket AI servers.\u003c\/dd\u003e\n\u003cdt\u003eWhat is an MCIO cable and why is it included?\u003c\/dt\u003e\n\u003cdd\u003eMCIO (Mini Cool Edge IO) is a compact, high-speed internal PCIe cable connector used in dense server designs. The 250mm MCIO cable connects the auxiliary card to the host PCIe Gen 6 interface internally, enabling low-latency socket-direct InfiniBand connectivity without an external PCIe riser.\u003c\/dd\u003e\n\u003cdt\u003eIs P81264-H21 a standalone network adapter?\u003c\/dt\u003e\n\u003cdd\u003eNo — P81264-H21 is an auxiliary card designed to work with a primary InfiniBand XDR HCA. It enables multi-host or socket-direct fabric attachment and is not a standalone network adapter with external ports.\u003c\/dd\u003e\n\u003c\/dl\u003e\u003cp\u003eThe HPE P81264-H21 InfiniBand XDR PCIe Gen 6 multi-host auxiliary card enables low-latency socket-direct fabric connectivity for HPE AI and HPC dense compute deployments. Order today — in stock at the best price.\u003c\/p\u003e","brand":"HPE","offers":[{"title":"Default Title","offer_id":48094295687329,"sku":"P81264-H21","price":0.0,"currency_code":"BRL","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2216\/8673\/files\/HPE-InfiniBand-XDR-PCIe-Gen6-x16-Multi-HostSocket-Direct-Auxiliary-Card-with-250mm-MCIO-Cable-Kit-P81264-H21.jpg?v=1792132046","url":"https:\/\/www.foxti.com.br\/products\/hpe-infiniband-xdr-pcie-gen6-x16-multi-hostsocket-direct-auxiliary-card-with-250mm-mcio-cable-kit-p81264-h21","provider":"FoxTI","version":"1.0","type":"link"}