NVIDIA Mellanox ConnectX-6 Dx Dual-Port 100GbE SmartNIC — Enterprise Performance at a Fraction of the Cost

Save big on the NVIDIA Mellanox ConnectX-6 Dx (MCX623106AN-CDAT) — a high-performance dual-port 100 Gigabit Ethernet SmartNIC professionally tested and certified to like-new condition. Ideal for AI training clusters, GPU servers, cloud data centers, and high-performance computing environments. Backed by Reef Telecom's industry-leading 10-year warranty and eligible for free ground shipping on orders over $300.

Key Features

• Dual QSFP56 ports — 100GbE per port (200 Gbps total bidirectional bandwidth)
• PCIe 4.0 x16 host interface (backward compatible with PCIe 3.0)
• Hardware RoCEv2 offload with advanced congestion control for RDMA workloads
• Sub-800ns latency for ultra-responsive AI training and HPC applications
• NVIDIA GPUDirect RDMA support for accelerated GPU-to-GPU transfers
• ASAP2 technology for virtual switch/router hardware offload (SR-IOV & VirtIO)
• Hardware-based TLS and IPsec encryption offload
• Secure boot with hardware root of trust
• 215 million messages per second throughput
• 20W typical power consumption | 0–55°C operating temperature

Ideal Use Cases

• NVIDIA DGX, HGX, and GPU server connectivity
• AI/ML training clusters requiring low-latency RDMA networking
• Cloud and hyperscale data center infrastructure
• NVMe over Fabrics (NVMe-oF) storage arrays
• Virtualized environments with SR-IOV and VirtIO requirements
• High-performance computing (HPC) and simulation workloads

Compatibility

Supports multi-speed operation at 10/25/40/50/100GbE per port. Fully compatible with NVIDIA AI Enterprise, VMware vSphere, Red Hat OpenStack, and major Linux distributions. Works seamlessly with NVIDIA Spectrum switches for complete fabric optimization.

Why Buy from Reef Telecom?

• 10-Year Warranty — industry-leading coverage on all refurbished equipment
• Free Ground Shipping on orders over $300
• Same-Day Shipping on orders placed before 4 PM EST
• Professionally Tested & Certified to like-new condition

Free ground shipping on orders over $300. Same-day shipping on orders placed before 4PM EST.

All products include our industry-leading 10 Year Warranty backed by Reef Telecom.