Ethernet: latest 400 Gbit/s, with rates up to 1.6 Tbit/s under development
InfiniBand: 10 to 400Gb/s
A single NVIDIA Blackwell Tensor Core GPU supports up to 18 NVLink 100 gigabyte-per-second (GB/s) connections for a total bandwidth of 1.8 terabytes per second (TB/s)—2X more bandwidth than the previous generation and over 14X the bandwidth of PCIe Gen5.
The NVIDIA NVLink Switch features 144 NVLink ports with a non-blocking switching capacity of 14.4TB/s
PCle 6.0: 64GT/s (gigatransfers) and a bandwidth of 256GB/s across 16 channels
More alternatives to PCIe: NVLINK, CAPI, GenZ, CCIX, and CXL