NVIDIA Mellanox ConnectX-6 MCX653105A-HDAT
Single-port HDR 200Gb/s InfiniBand/Ethernet VPI adapter, PCIe 4.0 x16
Host Interface
PCIe 4.0 x16 (backward compatible with PCIe 3.0 x16)
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)
Protocol Compliance
InfiniBand Architecture Spec v1.3; IEEE 802.3 200/100/50/40/25/10GbE, PFC, ETS, QCN
Product Description
The NVIDIA Mellanox ConnectX-6 MCX653105A-HDAT is a single-port Virtual Protocol Interconnect (VPI) adapter card that delivers up to 200Gb/s of InfiniBand HDR or Ethernet connectivity through a QSFP56 port and a PCIe 4.0 x16 host interface. Built on the MT28908A0-XCCF-HVM controller, it combines sub-600ns latency with up to 200 million messages per second, making it one of the fastest fabric adapters in the ConnectX-6 family. The card supports both InfiniBand (SDR through HDR) and Ethernet (up to 200GbE) from the same silicon, letting IT teams standardize on a single adapter across HPC and Ethernet-based cloud racks. Hardware-accelerated RDMA/RoCE v2, NVIDIA PeerDirect (GPUDirect) for GPU-to-NIC transfers, SR-IOV virtualization, and in-network computing offloads such as adaptive routing and tag matching make it well suited to demanding AI training clusters, HPC simulation, and storage-over-fabric deployments. Distributed by MABLETECH for regional system integrators and data center customers.