Mellanox MCX4121A-ACAT ConnectX 4 Ethernet Adapter Card 25GbE Dual-Port SFP28 PCIe 3x8
Mellanox MCX4121A-ACAT ConnectX 4 Ethernet Adapter Card 25GbE Dual-Port SFP28 PCIe 3x8 - Image 2

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Mellanox MCX4121A-ACAT ConnectX 4 Ethernet Adapter Card 25GbE Dual-Port SFP28 PCIe 3×8

The Mellanox MCX4121A-ACAT ConnectX-4 is a high-performance dual-port 25GbE Ethernet adapter designed for demanding data center and enterprise applications. This PCIe 3.0 x8 card delivers exceptional network throughput with two SFP28 ports, enabling up to 50Gbps aggregate bandwidth. Key features include hardware-based packet processing offloads, RDMA over Converged Ethernet (RoCE) support for ultra-low latency applications, and advanced virtualization capabilities with SR-IOV. The adapter significantly reduces CPU overhead while maximizing application performance, making it ideal for high-frequency trading, storage networks, virtualized environments, and cloud computing. Its energy-efficient design and Mellanox’s proven reliability ensure optimal performance per watt, while the flexible SFP28 connectivity supports both copper and optical cabling options for versatile deployment scenarios.

Quote1 Piece(MOQ)

Bulk Order Discounts Available

Warranty3 Years / 1 Year
Products StatusNew / Pulled
Packaging DetailsBOX / Bulk
Product NameMellanox MCX4121A-ACAT ConnectX 4 Ethernet Adapter Card 25GbE Dual-Port SFP28 PCIe 3x8
Port2

Product Spotlights

CPU Offloads:

RDMA over Converged Ethernet (RoCE)

TCP/UDP/IP stateless offload

LSO, LRO, checksum offload

RSS (can be done on encapsulated packet), TSS, VLAN insertion/ stripping, Receive flow steering

Intelligent interrupt coalescence

Hardware-Based I/O Virtualization:

Single Root IOV

Multi-function per port

Address translation and protection

Multiple queues per virtual machine

Enhanced QoS for vNICs

VMware NetQueue support

Enhanced Features:

Hardware-based reliable transport

Collective operations offloads

Vector collective operations offloads

Extended Reliable Connected transport (XRC)

Dynamically Connected transport (DCT)

Enhanced Atomic operations

Advanced memory mapping support, allowing user mode registration and remapping of memory (UMR)

On demand paging (ODP)

registratio

 

RDMA Technology Empowers EDC and HPC

RDMA allows real CPU offloads and kernel bypass, and, as such, RDMA-based applications provide better utilization of network HW resources while increasing speed and lowering link latencies.

 

Warranty

3 Years / 1 Year
Products Status

New / Pulled
Packaging Details

BOX / Bulk
Product Name

Mellanox MCX4121A-ACAT ConnectX 4 Ethernet Adapter Card 25GbE Dual-Port SFP28 PCIe 3×8
Port

2
Speed

25GbE
Brand

Mellanox
Application

Server
Interface

PCIe 3.0 x8

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