The Mellanox MCX4121A ACAT ConnectX 4 Lx EN Network Interface Card (NIC) is a high performance networking solution designed for data centers, high performance computing (HPC), and other demanding environments. Here's an overview of its key features:

Introduction:

The Mellanox ConnectX 4 Lx EN is part of the ConnectX 4 family of adapters, which are known for their exceptional performance, low latency, and high throughput. It is designed to support the latest Ethernet standards and is optimized for cloud computing, virtualization, and other network intensive applications.

Speed:

The MCX4121A ACAT supports 25GbE (Gigabit Ethernet) speeds, which is suitable for high speed data transfer and can handle the demands of modern data centers and HPC environments.

Interface Type:

This NIC features a dual port SFP28 interface, which allows for the use of SFP28 transceivers to connect to 25GbE networks. SFP28 is a compact, hot swappable transceiver that supports various types of cables and fiber optic connections.

Hardware Interface:

The card uses a PCIe 3.0 x8 interface, which provides a high speed connection to the host system. The PCIe 3.0 standard offers significant bandwidth for data transfer, and the x8 configuration means that the card can utilize up to eight lanes of PCIe bandwidth.

Chip Type System:

The ConnectX 4 Lx EN is based on Mellanox's BlueField SoC (System on Chip), which integrates a high performance network interface with a powerful ARM processor. This allows for advanced features such as in network computing, where some processing tasks can be offloaded from the host system to the NIC, reducing the load on the CPU and improving overall system performance.

Additional Features:

  Energy Efficiency: The ConnectX 4 Lx EN is designed with energy efficiency in mind, reducing power consumption while maintaining high performance.

  Reliability: Mellanox is known for its reliable and robust networking solutions, with features like RDMA (Remote Direct Memory Access) over Converged Ethernet (RoCE) for low latency communication.

  Support for Virtualization: The card supports virtualization technologies such as SR IOV (Single Root I/O Virtualization) and NVGRE (Network Virtualization using Generic Routing Encapsulation), which are essential for cloud environments.

  Tall \u0026 Short Bracket: The MCX4121A ACAT comes with both tall and short brackets, allowing for flexible installation in different server chassis configurations.

In summary, the Mellanox MCX4121A ACAT ConnectX 4 Lx EN Network Interface Card is a powerful and versatile solution for high speed networking in demanding environments, offering a combination of high performance, energy efficiency, and advanced features for virtualization and in network computing.

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