HPE InfiniBand XDR/Ethernet 2x400GbE 1-port OSFP PCIe6 x16 HHHL CX8 Crypto Adapter - P79114-H21

The HPE P79114-H21 is a single-port InfiniBand XDR / 2x400GbE OSFP adapter based on the ConnectX-8 (CX8) chipset with hardware crypto offload, in a half-height half-length (HHHL) PCIe Gen 6 x16 form factor. The single OSFP port delivers 2x400GbE throughput via breakout or native XDR InfiniBand for next-generation HPC and AI fabric deployments.

Key Features

• Single OSFP port delivering 2x400GbE or XDR InfiniBand — maximum bandwidth in one port
• ConnectX-8 (CX8) chipset with hardware crypto offload for encrypted fabric connectivity
• PCIe Gen 6 x16 host interface for full-bandwidth deployment on next-gen ProLiant platforms
• HHHL form factor for standard PCIe slot installation in ProLiant Gen11 servers

Product Specifications

• Part Number: P79114-H21
• Manufacturer: HPE
• Ports: 1x OSFP
• Speed: 2x400GbE / XDR InfiniBand per OSFP port
• Chipset: ConnectX-8 (CX8)
• Host Interface: PCIe Gen 6 x16
• Form Factor: HHHL (Half-Height Half-Length)
• Crypto: Hardware crypto offload enabled

Interface Specifications

• Host Interface: PCI Express Gen 6 x16
• Fabric Protocol: InfiniBand XDR or 2x400GbE Ethernet (adaptive)
• Port Type: Single OSFP
• Cable Support: OSFP cables and transceivers supporting 800Gb/s aggregate throughput

Network & Protocol Specifications

• InfiniBand Standard: XDR (per OSFP, supporting XDR bandwidth per lane group)
• Ethernet Mode: 2x400GbE via OSFP breakout
• RDMA: RDMA over InfiniBand and RoCEv2 over Ethernet
• Crypto Offload: Hardware-accelerated in-flight encryption for secure fabric communication

Use Cases

• Ultra-high-bandwidth HPC and AI interconnect using single OSFP 2x400GbE or XDR
• AI/ML GPU cluster fabric requiring maximum per-slot bandwidth in compact form factor
• 400GbE data center storage and east-west networking via OSFP breakout connectivity
• Encrypted fabric environments leveraging CX8 hardware crypto without CPU overhead

Compatibility

• HPE ProLiant Gen11 and next-generation platforms with PCIe Gen 6 x16 slots
• Compatible with OSFP-based InfiniBand XDR and 400GbE Ethernet switching infrastructure
• OSFP transceiver and cable ecosystem for 800Gb/s aggregate fabric connectivity

Frequently Asked Questions

What is the difference between P79114-H21 (OSFP single-port) and P79115-H21 (QSFP112 dual-port)?

P79114-H21 uses a single OSFP port delivering 2x400GbE aggregate, while P79115-H21 has two QSFP112 ports each at 400Gbps. OSFP supports higher-density cabling in a single connector; QSFP112 dual-port offers two independent fabric connections. Choose based on your cabling infrastructure and switch port availability.

What is an OSFP connector?

OSFP (Octal Small Form-factor Pluggable) is a high-density transceiver form factor supporting up to 800Gb/s aggregate throughput. It is used in next-generation 400GbE and InfiniBand XDR fabric infrastructure requiring maximum bandwidth per port.

Does P79114-H21 require PCIe Gen 6 to operate?

PCIe Gen 6 x16 is required for full performance. The adapter is backward compatible with PCIe Gen 5/Gen 4 slots at reduced bandwidth. For full 2x400GbE or XDR throughput, a PCIe Gen 6-capable server platform is recommended.

The HPE P79114-H21 single-port OSFP XDR / 2x400GbE CX8 Crypto adapter delivers maximum per-slot fabric bandwidth for HPE AI and HPC platforms. Get it in stock today at a competitive price.