NVIDIA A800 SXM4

The NVIDIA A800 SXM4 is the mezzanine form of the A800, the export-compliant variant of the A100 sold into the Chinese market, and the module carried on the NVIDIA HGX A800 8-GPU baseboard. It is distinct from the A800 PCIe card, which is a separate product listed separately here. NVIDIA publishes no datasheet, specification page or performance table for the A800 in any form factor, so no memory capacity and no throughput figures are shown on this entry. What is documented comes from server makers that ship it: Inspur's NF5688M6 white paper describes eight of these modules on one HGX A800 baseboard reaching 400 GB/s of peer-to-peer bandwidth through NVSwitch, and identifies the assembly by the part number NV_640G_HGX-A800-8GPU, which puts 640 GB of memory across the eight modules.