NVIDIA Mellanox ConnectX-7 400GbE Single-Port QSFP112 PCIe 5.0 x16 HH-HL Network Adapter — MCX715105AS-WEAT

The NVIDIA Mellanox MCX715105AS-WEAT is the ConnectX-7 single-port 400GbE QSFP112 network adapter with PCIe 5.0 x16 host interface in a half-height, half-length (HH-HL) form factor. Delivering 400Gb/s per port with RDMA over Converged Ethernet (RoCE) and InfiniBand support, it provides next-generation network performance for AI/ML training, HPC, and high-throughput data center workloads requiring maximum bandwidth and ultra-low latency.

Key Features

• 1x 400GbE QSFP112 port — next-generation 400Gb/s network connectivity
• PCIe 5.0 x16 host interface — maximum PCIe bandwidth for 400GbE throughput
• Half-height, half-length (HH-HL) form factor — 1U server compatible
• RoCE v2 and InfiniBand support for RDMA workloads
• NVIDIA SHARP in-network computing for AI/ML collective operations
• GPUDirect RDMA for direct GPU-to-network data transfer

Product Specifications

• Part Number: MCX715105AS-WEAT
• Manufacturer: NVIDIA (Mellanox)
• OEM Status: Retail
• Model: ConnectX-7
• Ports: 1x 400GbE QSFP112
• Host Interface: PCIe 5.0 x16
• Form Factor: HH-HL (Half-Height, Half-Length)
• RDMA: RoCE v2, InfiniBand

Interface Specifications

• Host Interface: PCIe 5.0 x16
• Network Port: 1x QSFP112 (400GbE)
• Form Factor: HH-HL (Half-Height, Half-Length)
• Bandwidth: Up to 400Gb/s

Port Specifications

• Ports: 1x 400GbE QSFP112
• Protocol: Ethernet (400GbE), InfiniBand NDR200
• RDMA: RoCE v2, InfiniBand
• GPUDirect: Supported
• SHARP: Supported

Use Cases

• AI/ML distributed training requiring 400GbE GPU-to-GPU RDMA connectivity
• HPC cluster interconnect with 400GbE or InfiniBand NDR200
• High-throughput data center networking for storage and compute
• GPUDirect RDMA for direct GPU-to-network data transfer in AI workloads

Compatibility

• PCIe 5.0 x16 slots (backward compatible with PCIe 4.0)
• QSFP112 400GbE optical transceivers and DAC cables
• Windows Server, Linux, and VMware ESXi with NVIDIA MLNX_OFED driver
• NVIDIA GPU servers supporting GPUDirect RDMA

Frequently Asked Questions

What is the difference between MCX715105AS-WEAT and MCX755106AC-HEAT?

The MCX715105AS-WEAT is a single-port 400GbE ConnectX-7 in HH-HL form factor, while the MCX755106AC-HEAT is a dual-port 200GbE ConnectX-7 in a standard form factor. Select based on whether you need maximum single-port bandwidth (400GbE) or dual-port 200GbE connectivity.

What is QSFP112?

QSFP112 is the 400GbE transceiver form factor — using 4 lanes at 100Gb/s each (PAM4 signaling) to deliver 400Gb/s total bandwidth. It requires QSFP112-compatible cables and transceivers.

The NVIDIA Mellanox MCX715105AS-WEAT ConnectX-7 delivers single-port 400GbE QSFP112 connectivity over PCIe 5.0 x16 in an HH-HL form factor — a next-generation network adapter for AI/ML training, HPC, and high-throughput data center workloads requiring maximum 400GbE bandwidth and RDMA performance.