MCX516A-CDAT Mellanox ConnectX-5 EN Network Adapter PCIe 4.0 x16 100GbE QSFP x2

Mellanox MCX516A-CDAT 100Gb Ethernet Adapter Overview

The Mellanox MCX516A-CDAT ConnectX-5 EN 100 Gigabit Ethernet Adapter is a high-performance PCI Express network interface card engineered for modern enterprise networking, cloud infrastructure, virtualization, high-performance computing (HPC), artificial intelligence (AI), machine learning, and large-scale data center deployments. Designed to deliver ultra-fast bandwidth, low latency, and outstanding reliability, this dual-port QSFP28 adapter enables organizations to build scalable and efficient networking environments that support demanding workloads.

Product Specifications

General Information

• Manufacturer: Mellanox
• Model: ConnectX-5 EN
• Part Number: MCX516A-CDAT
• Product Category: Ethernet Network Adapter
• Device Type: PCI Express Plug-in Card

Hardware Specifications

PCI Express Interface

• Form Factor: Plug-in Card
• Host Interface: PCI Express 4.0 x16
• PCIe Specification: Revision 4.0

Dual QSFP28 Ports

• Network Ports: 2 × QSFP28
• Maximum Speed: 100 Gigabit Ethernet
• Connectivity: Wired Networking

Supported Ethernet Standards

• Gigabit Ethernet (1GbE)
• 10 Gigabit Ethernet (10GbE)
• 25 Gigabit Ethernet (25GbE)
• 40 Gigabit Ethernet (40GbE)
• 50 Gigabit Ethernet (50GbE)
• 100 Gigabit Ethernet (100GbE)

100 Gbps Network Throughput

• Maximum Transfer Rate: 100 Gbps
• Ultra-low latency networking
• High bandwidth for mission-critical workloads
• Optimized packet processing performance

Ideal Deployment Scenarios

• Enterprise data centers
• Cloud computing platforms
• Virtualized server environments
• Artificial Intelligence infrastructure
• Machine Learning clusters
• High-Performance Computing (HPC)
• Network-attached storage systems
• Software-defined networking
• Hyper-converged infrastructure
• Large-scale virtualization deployments

Key Features of Mellanox MCX516A-CDAT

• Dual-port 100 Gigabit Ethernet connectivity
• Powered by Mellanox ConnectX-5 EN technology
• PCI Express 4.0 x16 host interface
• Supports wired high-speed networking
• Maximum data transfer speed of up to 100 Gbps
• Compatible with multiple Ethernet standards
• Optimized for virtualization, cloud, storage, and enterprise applications
• Reliable, scalable, and energy-efficient networking solution

Advantages of the Mellanox MCX516A-CDAT

• Enterprise-class networking performance
• Advanced PCIe Gen4 architecture
• Dual 100GbE QSFP28 connectivity
• Broad Ethernet protocol compatibility
• Optimized for virtualization and cloud computing
• Ideal for HPC and AI environments
• High-speed, low-latency communication
• Scalable solution for future network expansion

Key Features

• Dual-port 100 Gigabit Ethernet connectivity
• Powered by Mellanox ConnectX-5 EN technology
• PCI Express 4.0 x16 host interface
• Supports wired high-speed networking
• Maximum data transfer speed of up to 100 Gbps
• Compatible with multiple Ethernet standards
• Optimized for virtualization, cloud, storage, and enterprise applications
• Reliable, scalable, and energy-efficient networking solution

Mellanox MCX516A-CDAT ConnectX-5 EN 100-Gigabit Adapter

The Mellanox MCX516A-CDAT ConnectX-5 EN 100-Gigabit Ethernet Adapter is engineered to deliver exceptional Ethernet connectivity for modern enterprise data centers, cloud computing infrastructures, virtualization platforms, high-performance computing environments, storage networks, and artificial intelligence workloads. Designed around the advanced ConnectX-5 architecture, this adapter enables organizations to deploy reliable, ultra-fast networking while maintaining low latency, high throughput, and efficient CPU utilization. Businesses seeking scalable network infrastructure often choose this Ethernet adapter because it supports demanding applications that require consistent bandwidth, predictable performance, and dependable packet delivery.

As organizations continue to generate and process enormous volumes of data, network bottlenecks become increasingly problematic. The Mellanox MCX516A-CDAT helps eliminate these challenges by supporting 100 Gigabit Ethernet connectivity capable of transporting large datasets rapidly between servers, storage arrays, and network appliances. The adapter is optimized for environments where application responsiveness, virtualization density, and storage performance directly impact business productivity.

The ConnectX-5 EN family incorporates intelligent hardware acceleration technologies that improve networking efficiency while reducing software overhead. Instead of relying solely on server processors to manage networking tasks, many operations are offloaded directly to the adapter, allowing CPU resources to remain available for application processing, database management, virtualization, and analytics workloads.

Advanced ConnectX-5 EN Architecture

The ConnectX-5 EN architecture represents an important advancement in Ethernet networking by integrating powerful hardware acceleration with flexible networking capabilities. The Mellanox MCX516A-CDAT is designed for modern workloads that demand consistent bandwidth, extremely low latency, and reliable packet transmission under heavy traffic conditions.

High-Speed Ethernet Performance

Supporting 100 Gigabit Ethernet connectivity, the adapter dramatically increases available network bandwidth compared to previous generations of Ethernet technology. Large database synchronization, virtual machine migration, distributed storage access, backup operations, and cloud application communication all benefit from increased throughput.

The enhanced bandwidth allows organizations to consolidate workloads while minimizing network congestion. Multiple high-bandwidth applications can share infrastructure without creating communication bottlenecks that reduce productivity or application responsiveness.

Efficient Data Processing

The intelligent processing capabilities integrated into the ConnectX-5 controller minimize host processor utilization during packet transmission and reception. Hardware acceleration reduces interrupt overhead while improving packet processing efficiency. This enables servers to dedicate additional CPU resources toward business applications instead of network management functions.

Reliable Packet Delivery

Enterprise environments require dependable network communication. The Mellanox MCX516A-CDAT is engineered to maintain packet integrity while delivering stable performance during sustained network utilization. This level of reliability is essential for financial applications, cloud platforms, enterprise databases, and distributed computing systems where data consistency remains a top priority.

PCI Express Integration for Enterprise Servers

The adapter utilizes a high-bandwidth PCI Express interface that enables efficient communication between the network controller and the host system. PCI Express technology provides sufficient bandwidth to fully utilize 100 Gigabit Ethernet performance without creating internal data transfer limitations.

Optimized PCIe Throughput

The PCI Express interface ensures that incoming and outgoing network traffic flows efficiently between server memory and the network adapter. High-speed internal communication reduces latency while maximizing packet throughput across demanding enterprise workloads.

Compatibility with Modern Server Platforms

The Mellanox MCX516A-CDAT is compatible with numerous enterprise server platforms commonly deployed within data centers. Modern rack servers, blade servers, GPU computing systems, virtualization hosts, and storage appliances can integrate this adapter to provide high-performance Ethernet connectivity.

Support for Enterprise Expansion

The adapter's enterprise-class design allows organizations to expand networking capacity without requiring extensive infrastructure redesign. Businesses upgrading from lower-speed Ethernet technologies can deploy the adapter as part of phased network modernization strategies while maintaining compatibility with contemporary server hardware.

Virtualization Performance Enhancement

Virtualization platforms place unique demands on network infrastructure due to multiple virtual machines sharing physical network resources. The Mellanox MCX516A-CDAT addresses these requirements through intelligent hardware capabilities that improve virtualization efficiency while maintaining predictable network performance.

Improved Virtual Machine Networking

Virtual machines frequently communicate with storage systems, application servers, backup repositories, and cloud management platforms. The adapter provides sufficient bandwidth for these communications while maintaining consistent latency across numerous concurrent workloads.

Network Resource Optimization

Hardware acceleration technologies reduce networking overhead associated with virtualized environments. This allows hypervisors to allocate more processing resources toward guest operating systems instead of packet management functions.

Scalable Virtual Infrastructure

Organizations expanding virtualization deployments benefit from the scalable architecture of the ConnectX-5 EN platform. Additional virtual machines can be provisioned while maintaining high network performance across growing infrastructure.

Cloud Computing Infrastructure Support

Cloud computing environments require networking hardware capable of handling dynamic workloads, multi-tenant traffic, and continuously changing resource demands. The Mellanox MCX516A-CDAT provides the performance necessary to support public cloud, private cloud, and hybrid cloud architectures.

Efficient Cloud Workload Distribution

Cloud orchestration platforms continuously migrate workloads, provision virtual machines, and synchronize storage across multiple hosts. High-speed Ethernet connectivity enables these operations to complete rapidly while minimizing service interruptions.

Consistent Application Availability

Reliable networking contributes significantly to cloud service availability. Stable packet delivery, reduced latency, and high throughput enable cloud-hosted applications to maintain responsive user experiences even during peak operational periods.

Elastic Infrastructure Scaling

The adapter supports cloud environments where computing resources are dynamically expanded according to workload demands. High-capacity networking enables infrastructure growth without creating communication bottlenecks between compute nodes and storage resources.

Storage Networking Performance

Modern enterprise storage systems depend heavily on high-speed Ethernet networking. The Mellanox MCX516A-CDAT facilitates rapid movement of storage traffic between servers and storage platforms while maintaining low latency and high reliability.

Large File Transfers

Organizations managing multimedia content, engineering simulations, scientific research, and enterprise backups frequently transfer massive files between storage systems. The adapter significantly reduces transfer times by leveraging 100 Gigabit Ethernet bandwidth.

Storage Cluster Communication

Distributed storage environments require efficient synchronization between storage nodes. High-performance Ethernet minimizes replication delays while supporting continuous data availability across clustered storage architectures.

Data Protection Operations

Backup, disaster recovery, and replication workflows benefit from increased network capacity. Faster backup windows enable organizations to protect more data within limited maintenance periods while improving recovery readiness.

High-Performance Computing Applications

Scientific research organizations, engineering firms, academic institutions, and enterprise analytics platforms frequently deploy high-performance computing clusters that require extremely fast communication between compute nodes. The Mellanox MCX516A-CDAT provides the networking performance necessary to support parallel processing environments.

Cluster Communication Efficiency

Distributed computing applications exchange large quantities of information between servers during computation. High-bandwidth networking reduces communication delays and improves overall cluster efficiency.

Research Computing Performance

Universities and research institutions utilize high-speed networking to support simulations, modeling, genomic analysis, weather forecasting, and computational science applications. The adapter contributes to improved research productivity through reliable high-performance networking.

Low-Latency Network Communication

Latency remains a critical performance metric for enterprise applications. The Mellanox MCX516A-CDAT minimizes communication delays through optimized packet processing, intelligent hardware acceleration, and efficient network architecture.

Real-Time Application Support

Applications requiring rapid response times, including financial trading systems, online transaction processing, industrial automation, and telecommunications infrastructure, benefit from reduced network latency.

Efficient Packet Processing

The adapter processes packets rapidly while minimizing delays associated with software-based networking operations. This contributes to predictable application performance even under sustained network utilization.

Consistent User Experience

Low-latency communication improves responsiveness for enterprise users accessing centralized applications, virtual desktops, cloud services, and distributed databases across high-speed Ethernet infrastructure.

Enterprise Reliability and Operational Stability

The Mellanox MCX516A-CDAT is engineered for continuous operation within enterprise environments where network availability directly influences business continuity. Stable hardware design, dependable Ethernet communication, and enterprise-grade manufacturing contribute to long operational life.

Continuous Network Availability

Servers operating around the clock require networking hardware capable of sustaining heavy workloads without compromising reliability. The adapter supports continuous enterprise operations across production environments.

Reduced Maintenance Requirements

Robust engineering minimizes operational interruptions while supporting extended deployment within enterprise infrastructure. Reduced maintenance contributes to lower total operational costs over the hardware lifecycle.

Long-Term Infrastructure Investment

Organizations investing in high-speed networking seek hardware that remains relevant as workloads continue expanding. The scalable architecture of the ConnectX-5 EN platform supports evolving business requirements while delivering dependable Ethernet performance throughout enterprise deployments.

Deployment Across Multiple Industries

The Mellanox MCX516A-CDAT ConnectX-5 EN 100-Gigabit Ethernet Adapter serves numerous industries requiring dependable, high-capacity networking. Financial institutions utilize low-latency Ethernet for transaction processing, healthcare organizations support medical imaging and electronic health record systems, manufacturing companies enable industrial automation, educational institutions facilitate research computing, and cloud providers operate large-scale virtualized infrastructures. Media production companies benefit from accelerated content transfer, while engineering organizations leverage high-speed networking for simulation workloads and collaborative design environments. The adapter's flexibility allows it to integrate seamlessly into diverse enterprise architectures where network performance directly impacts operational efficiency, scalability, and overall business productivity.