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Mellanox CX4121A 2-Port 25Gbs SFP28 PCIE 3.0 GE 25GBase-X Network Card
- Ports: 2 x 25GbE SFP28
- Interface: PCIe 3.0 x4
- Data Rate: 25Gb/s per port
- Form Factor: Standard PCIe card
- Connector Type: SFP28
- Protocol Support: Ethernet
- Target Application: High-performance networking, data centers, servers
- Low Latency
- RDMA Support (RoCE)
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Product Overview
The Mellanox CX4121A is a dual-port 25GbE network interface card (NIC) that utilizes a PCIe 3.0 x4 interface. It supports 25GBase-X Ethernet and is designed for high-performance networking in servers and data centers.
Technical Information
| Ports | 2 x 25GbE |
| Interface | PCIe 3.0 x4 |
| Data Rate | 25Gb/s per port |
| Connector Type | SFP28 |
Additional Specifications
| Form Factor | Standard PCIe |
| Protocol | Ethernet |
| RDMA | Yes (RoCE) |
| Vendor | Mellanox (NVIDIA) |
Product Description
The Mellanox CX4121A is a high-performance dual-port 25 Gigabit Ethernet Network Interface Card (NIC) designed to meet the demanding bandwidth requirements of modern data centers and enterprise networks. Featuring two SFP28 ports, each capable of operating at 25Gb/s, this card provides significant throughput for server connectivity and inter-server communication. It connects to the host system via a PCIe 3.0 x4 interface, ensuring sufficient bandwidth to support the full speed of both 25GbE ports simultaneously. This makes it ideal for applications such as high-performance computing (HPC), storage networking, cloud infrastructure, and virtualized environments where low latency and high throughput are critical. The CX4121A supports advanced features like RDMA (Remote Direct Memory Access) over Converged Ethernet (RoCE), which allows for direct memory access between applications on different servers, bypassing the CPU and operating system kernel for reduced latency and improved efficiency. Its robust design and Mellanox's reputation for quality make it a reliable choice for mission-critical network infrastructure.
