The Mellanox ConnectX-5 CX516A is a high-performance 100GbE dual-port network interface card (NIC) engineered for high-performance computing (HPC), enterprise data centers, and cloud environments. It delivers up to 100Gb/s per port of bandwidth with ultra-low latency, running over a PCIe Gen 3.0/4.0 x16 interface. Equipped with advanced hardware offloads for RDMA over Converged Ethernet (RoCE), NVMe over Fabrics (NVMe-oF), and Open vSwitch (OVS), it significantly reduces CPU utilization while accelerating data transfer and network virtualization. Ideal for bandwidth-intensive databases, cloud-scale computing, and high-frequency trading workloads.
| Model | ConnectX-5 CX516A (MCX516A-CDAT) |
| Brand | NVIDIA Mellanox |
| Speed | 100 Gbps per port |
| Ports | 2 x QSFP28 Slots |
| Interface | PCI Express 3.0 x16 |
| Controller | ConnectX-5 |
| Features | RoCE v1/v2, NVMe-oF, ASAP² (OVS Offloads), SR-IOV (Up to 512 VFs), GPUDirect RDMA |
| Cabling Support | Direct Attach Copper (DAC), Active Optical Cables (AOC), QSFP28 Transceivers |