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MCX654105A-HCAT

NVIDIA Mellanox ConnectX-6 MCX654105A-HCAT

Single-port HDR 200Gb/s InfiniBand/Ethernet Socket Direct adapter kit, dual PCIe 3.0 x16

P/N: MCX654105A-HCAT

Host Interface

Socket Direct 2x PCIe x16 (edge connector: Gen 3.0/4.0; auxiliary card: Gen 3.0), kit includes 2x Cabline CA-II Plus harnesses

Port Count

1-port

Port Speed & Connector Type

200Gb/s QSFP56 (HDR InfiniBand and 200GbE)

Network Protocol / RDMA

InfiniBand SDR/DDR/QDR/FDR/EDR/HDR100/HDR and Ethernet 10/25/40/50/100/200GbE; RDMA over Converged Ethernet (RoCE v2)

Multi-Host

Not supported on Socket Direct 2x PCIe x16 cards (dual-CPU direct connect only, contact NVIDIA for Multi-Host variants)

Regulatory Certifications

Product Description

The NVIDIA Mellanox ConnectX-6 MCX654105A-HCAT is a single-port VPI adapter kit built around NVIDIA Socket Direct technology, which splits the card's 32-lane PCIe bus into two 16-lane connections: one through the adapter's PCIe x16 edge connector and a second through a companion PCIe x16 auxiliary card, linked by two Cabline CA-II Plus harnesses. This design lets each CPU in a dual-socket server reach the fabric directly over its own PCIe interface, bypassing the inter-CPU QPI/UPI link to reduce latency and CPU utilization, while also enabling full 200Gb/s InfiniBand HDR or 200GbE connectivity on servers whose slots are limited to PCIe Gen 3.0. Based on the MT28908A0-XCCF-HVM controller with the same RDMA/RoCE v2, SR-IOV, and in-network computing offloads as the standard VPI cards, the kit is not supported under Windows/WinOF-2 and does not provide Multi-Host connectivity. Distributed by MABLETECH for regional system integrators building dual-socket HPC and AI infrastructure.