Hardware / NICs and DPUs / ConnectX-8 SuperNIC

NVIDIA ConnectX-8 SuperNIC

The 800G NIC for Blackwell Ultra. HGX B300 and GB300 systems use it for the compute fabric, one per GPU.

Max speed
800 Gb/s
Protocols
InfiniBand XDR or Ethernet
Host interface
PCIe Gen 6, with an integrated PCIe switch
Cages
OSFP

Where it fits in the cluster

GPUThis NIC800G optic800G leaf switch

Compatible with

SWITCHQuantum-X800 Q3400SWITCHSpectrum-4 SN5600SERVERHGX B300

Common pitfalls

  • Full 800G needs an 800G switch port. On NDR switches it runs at 400G.
  • Confirm the server is built for it: the PCIe Gen 6 host link and integrated switch change the board layout.

Building with ConnectX-8 SuperNIC?

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.