Hardware / NICs and DPUs / ConnectX-7

NVIDIA ConnectX-7 network adapter

The standard GPU-node NIC for Hopper-generation clusters. HGX H100 and H200 systems typically carry eight, one per GPU, for the compute fabric.

Max speed
400 Gb/s
Protocols
InfiniBand NDR or Ethernet
Host interface
PCIe Gen 5 x16
Ports
1 or 2, by model

Where it fits in the cluster

GPUThis NIC400G opticLeaf switch

Compatible with

OPTIC400G OSFP DR4 (NIC side)SWITCHQuantum-2 QM9700SERVERHGX H100SERVERHGX B200

Common pitfalls

  • InfiniBand and Ethernet SKUs differ. Match the NIC to the fabric you are actually building.
  • NIC-side cages take flat-top modules, not the finned-top optics used in switches.

Building with ConnectX-7?

Send us the cluster spec. We source the full bill of materials, and can finance it.

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Specs from vendor datasheets. Confirm configuration with your supplier before ordering.