Mellanox ConnectX-4 Dual Port 25GbE SFP28 Network Card PCIe 3.0 x8, RDMA over Converged Ethernet (RoCE), Low Latency, for Data Center, Cloud, and HPC

Unleash the full potential of your data center, cloud infrastructure, or high-performance computing environment with the Mellanox ConnectX-4 Dual Port 25GbE SFP28 Network Card. Engineered for applications demanding exceptional bandwidth, ultra-low latency, and high message rates, this PCIe 3.0 x8 adapter delivers 25 Gigabit Ethernet connectivity across two SFP28 ports, providing the performance foundation for next-generation workloads.

Enterprise-Grade Performance

Powered by the Mellanox ConnectX-4 controller, this network card supports 1/10/25Gb/s speeds, offering flexible deployment options for diverse infrastructure requirements. Whether you're running Web 2.0 applications, cloud services, big data analytics, or GPU-accelerated computing platforms, the ConnectX-4 delivers the throughput and efficiency needed to scale with confidence.

RDMA over Converged Ethernet (RoCE)

A key differentiator of this adapter is its support for RoCE (RDMA over Converged Ethernet) , enabling low-latency, CPU-efficient data transfers. By allowing direct memory access between systems without host CPU involvement, RoCE significantly reduces latency and frees up processor resources for application workloadscritical for storage clusters, distributed databases, and high-frequency trading environments.

Hardware Offload for Modern Workloads

The ConnectX-4 features extensive hardware offload capabilities, including:

1. NVGRE, VXLAN, and GENEVE encapsulation offload for virtual overlay networks
2. Transport operations offload to reduce CPU utilization
3. Peer-to-peer communication acceleration for GPU and storage interconnects
4. End-to-end QoS and congestion control (IEEE 802.1Qau, 802.1Qbb, 802.1Qaz)

Virtualization-Ready Architecture

With support for SR-IOV (Single Root I/O Virtualization) , multi-host technology, and virtualized overlay networks, this adapter enables efficient I/O consolidation, reducing data center costs and complexity. Virtualized environments benefit from near-native performance across virtual machines, making it ideal for private and public cloud deployments.

Broad OS & Platform Support

Compatible with a wide range of operating systems, including:

1. Windows Server (2008/2012/2016/2019) and Windows Desktop (7/8/8.1/10)
2. Linux distributions, VMware ESXi, FreeBSD, Ubuntu, and Citrix XenServer