MCX516A-CCAT Mellanox ConnectX-5 Network Adapter PCI Express 3.0 X16 100GbE QSFP X 2

Mellanox MCX516A-CCAT 100Gb PCI-E Adapter Outline

The Mellanox MCX516A-CCAT ConnectX-5 EN 100 Gigabit Ethernet Adapter is a high-performance PCIe network interface card engineered for enterprise data centers, cloud computing, virtualization, high-performance computing (HPC), artificial intelligence (AI), and large-scale storage environments. Featuring dual QSFP28 ports and PCI Express 3.0 x16 connectivity, this adapter delivers exceptional bandwidth, ultra-low latency, and reliable network performance for demanding workloads.

Built with the advanced ConnectX-5 architecture, the MCX516A-CCAT helps organizations maximize server efficiency while reducing CPU utilization. It supports multiple Ethernet speeds, making it an ideal networking solution for modern infrastructure upgrades and future-ready deployments.

General Information

Manufacturer Details

• Manufacturer: Mellanox Technologies
• Model Number: MCX516A-CCAT
• Series: ConnectX-5 EN
• Product Category: 100 Gigabit Ethernet Network Adapter
• Device Type: PCI Express Network Interface Card (NIC)

Technical Specifications

Form Factor

• Plug-in Card
• Server-grade network adapter
• Designed for enterprise deployment

PCI Express Interface

• Host Interface: PCI Express 3.0 x16
• PCIe Revision: PCI Express 3.0
• High-bandwidth server connectivity

Advanced Networking Capabilities

Network Ports

• 2 × QSFP28 100 Gigabit Ethernet ports
• Supports high-density networking environments
• Ideal for top-of-rack and spine-leaf architectures

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)

High-Speed Data Transfer Performance

Performance Benefits

• Up to 100 Gbps network bandwidth
• Reduced network latency
• Faster application response times
• Improved server utilization
• Efficient handling of high-volume network traffic

Enterprise Deployment Advantages

• Enterprise data centers
• Cloud computing infrastructure
• Virtualized server environments
• High-performance computing (HPC)
• Artificial intelligence and machine learning
• Big data analytics
• Network-attached storage (NAS)
• Storage area networks (SAN)

Reliable Wired Network Connectivity

• Wired Ethernet technology
• High network availability
• Consistent bandwidth delivery
• Enhanced operational reliability

Advantages of the Mellanox MCX516A-CCAT

• ConnectX-5 EN architecture
• Dual 100Gb QSFP28 Ethernet ports
• PCI Express 3.0 x16 interface
• Supports 1GbE, 10GbE, 25GbE, 40GbE, 50GbE, and 100GbE
• Maximum data transfer rate of 100 Gbps
• Plug-in card form factor
• Designed for enterprise, cloud, virtualization, and HPC environments

Key Features of Mellanox MCX516A-CCAT

• Dual-port 100GbE QSFP28 network adapter
• PCI Express 3.0 x16 host interface
• Supports multiple Ethernet speeds from 1GbE to 100GbE
• Optimized for virtualization, cloud, and enterprise networking
• Low-latency and high-throughput data transmission
• High reliability for mission-critical workloads
• Designed for scalable data center infrastructures

Mellanox MCX516A-CCAT 100-Gigabit Ethernet Adapter

The Mellanox MCX516A-CCAT ConnectX-5 EN 100-Gigabit Ethernet Adapter is designed to deliver exceptional network performance for modern enterprise, cloud, virtualization, and high-performance computing environments. As organizations continue to generate larger volumes of data and demand lower latency communication between servers, storage systems, and network infrastructure, high-speed Ethernet adapters have become essential components of next-generation data centers. The MCX516A-CCAT combines advanced hardware architecture, intelligent acceleration technologies, and outstanding bandwidth capabilities to support the demanding workloads of today's digital infrastructure.

Engineered with the renowned ConnectX-5 architecture, the MCX516A-CCAT provides outstanding throughput while minimizing CPU utilization through hardware offloading features. This balance allows servers to dedicate more processing resources to applications instead of network management tasks. Whether deployed in virtualization clusters, cloud environments, software-defined networking infrastructures, AI workloads, or enterprise storage systems, this Ethernet adapter consistently delivers reliable connectivity and enterprise-grade performance.

Organizations seeking dependable 100 Gigabit Ethernet connectivity benefit from the adapter's compatibility with modern PCI Express interfaces, advanced packet processing capabilities, and robust driver support across multiple operating systems. The adapter enables seamless communication between servers while supporting emerging networking technologies that improve scalability, efficiency, and operational flexibility.

ConnectX-5 Architecture Designed for Modern Data Centers

The ConnectX-5 EN architecture represents a significant advancement in Ethernet networking technology. Rather than functioning as a simple network interface card, the MCX516A-CCAT incorporates intelligent processing capabilities that optimize data movement throughout the network infrastructure. This sophisticated design enables administrators to achieve higher throughput while reducing latency and improving application responsiveness.

Data centers handling virtualization, cloud computing, distributed databases, analytics platforms, and software-defined storage require networking hardware capable of processing millions of packets efficiently. The ConnectX-5 platform addresses these requirements through advanced packet acceleration, intelligent traffic management, and hardware-assisted networking technologies that significantly improve server efficiency.

As workloads continue to evolve toward containerization, microservices, artificial intelligence, and machine learning, network adapters must process increasingly complex traffic patterns. The MCX516A-CCAT is engineered to accommodate these demanding environments while maintaining exceptional performance under sustained workloads.

Optimized PCI Express Integration

The adapter utilizes a high-bandwidth PCI Express interface that ensures sufficient communication between the server motherboard and the Ethernet controller. This high-speed interface eliminates internal bottlenecks that can occur when network bandwidth exceeds internal bus capabilities. Organizations deploying bandwidth-intensive applications benefit from the efficient interaction between PCI Express architecture and the ConnectX-5 controller.

Advanced Packet Processing Engine

The integrated packet processing engine accelerates network traffic by performing numerous operations directly within the adapter hardware. This approach significantly reduces processor overhead while improving overall application performance. Large-scale deployments particularly benefit from hardware acceleration because CPU resources remain available for business-critical workloads instead of packet handling.

100 Gigabit Ethernet Performance

The primary strength of the Mellanox MCX516A-CCAT lies in its ability to deliver high-speed 100 Gigabit Ethernet connectivity for mission-critical applications. Modern enterprise environments frequently move enormous volumes of data between compute nodes, storage arrays, virtualization hosts, and cloud gateways. The adapter provides the bandwidth necessary to support these demanding operations without introducing unnecessary network congestion.

Applications involving big data analytics, artificial intelligence model training, distributed computing, media rendering, scientific research, and financial transaction processing all require consistent high-speed communication. The adapter's architecture enables these workloads to exchange information rapidly while maintaining low latency across the network infrastructure.

High Throughput Under Continuous Workloads

Unlike conventional Ethernet adapters that may experience performance degradation under sustained traffic loads, the ConnectX-5 EN platform is engineered for continuous enterprise operation. Its intelligent buffering, traffic scheduling, and packet management capabilities maintain stable throughput even during peak utilization periods.

Low Latency Network Communication

Latency remains one of the most important performance metrics within enterprise networking. Applications involving clustered databases, distributed storage, virtualization migration, financial trading, and cloud-native services require extremely fast response times. The MCX516A-CCAT minimizes communication delays through optimized hardware processing and advanced networking technologies that reduce packet transmission overhead.

Virtualization Optimization with Hardware Acceleration

Virtualization platforms place substantial demands on networking infrastructure because multiple virtual machines often share a single physical network adapter. The MCX516A-CCAT addresses these challenges through intelligent hardware virtualization support that enables efficient communication between virtualized workloads.

Modern virtualization environments require predictable performance regardless of the number of hosted virtual machines. The ConnectX-5 architecture provides hardware-assisted virtualization features that reduce software processing overhead while maintaining consistent network responsiveness across multiple guest operating systems.

Virtual Machine Performance Enhancement

Each virtual machine benefits from efficient network resource allocation, allowing workloads to communicate with external systems while minimizing latency and maximizing throughput. This capability improves application responsiveness and overall server utilization.

Scalable Cloud Infrastructure

Private cloud and hybrid cloud deployments require networking hardware capable of supporting rapid workload scaling. The MCX516A-CCAT enables administrators to expand virtualized environments while maintaining reliable network performance across growing infrastructures.

Storage Networking Capabilities

Enterprise storage solutions increasingly rely on high-speed Ethernet connectivity for data replication, backup operations, distributed storage, and software-defined storage architectures. The MCX516A-CCAT supports storage networking applications by providing reliable, low-latency communication between storage devices and compute resources.

Organizations implementing network-attached storage, object storage, distributed file systems, and storage clusters benefit from the adapter's ability to transport large volumes of storage traffic with exceptional efficiency. High-bandwidth networking reduces backup windows, accelerates replication, and improves storage responsiveness across enterprise environments.

Efficient Data Replication

Business continuity strategies often require continuous data replication between multiple storage systems. The adapter supports these operations by providing stable, high-speed connectivity capable of transferring large datasets with minimal performance impact.

Accelerated Backup Operations

Large-scale backup jobs frequently involve transferring terabytes of information across the network. The MCX516A-CCAT reduces backup completion times through its high-bandwidth architecture and efficient packet processing capabilities.

Hardware Offloading Technologies

One of the defining advantages of the ConnectX-5 EN platform is its comprehensive implementation of hardware offloading features. Instead of relying exclusively on the server processor for networking tasks, numerous operations are executed directly by the network controller. This intelligent workload distribution significantly improves server efficiency.

Hardware acceleration contributes to lower CPU utilization, improved scalability, reduced latency, and increased application performance. Enterprise administrators can consolidate additional workloads onto existing hardware because networking consumes fewer computational resources.

Checksum Offloading

Checksum calculations are performed directly by the adapter hardware, reducing processor workload during packet transmission and reception. This optimization enhances overall networking efficiency while maintaining data integrity.

Segmentation Offloading

Large data transfers are segmented efficiently by dedicated hardware logic rather than software routines. This reduces CPU overhead while increasing throughput during intensive network operations.

Receive Side Scaling

Receive Side Scaling distributes incoming network traffic across multiple processor cores, improving parallel processing efficiency and maximizing multi-core server performance.

Compatibility Across Enterprise Operating Systems

The Mellanox MCX516A-CCAT supports a broad range of enterprise operating systems commonly deployed throughout modern data centers. This compatibility enables seamless integration into heterogeneous IT environments where multiple operating systems coexist within the same infrastructure.

Organizations operating Linux servers, Windows Server environments, virtualization platforms, and cloud operating systems benefit from mature driver support and ongoing software updates. Comprehensive compatibility simplifies deployment while reducing integration complexity for enterprise administrators.

Linux Environment Integration

Linux remains one of the most widely deployed operating systems within cloud infrastructure, high-performance computing, storage platforms, and enterprise servers. The adapter integrates efficiently with major Linux distributions while supporting advanced networking capabilities required by enterprise workloads.

Windows Server Compatibility

Organizations operating Microsoft-based infrastructures can deploy the MCX516A-CCAT within Windows Server environments while taking advantage of enterprise networking features, virtualization support, and high-speed connectivity.

Cloud Computing Infrastructure Performance

Cloud service providers require networking hardware capable of supporting thousands of simultaneous workloads distributed across numerous physical servers. The ConnectX-5 EN platform provides the scalability necessary for cloud computing environments where consistent bandwidth and low latency directly influence application performance.

As cloud platforms expand, networking infrastructure must accommodate increasing east-west traffic between servers as well as north-south traffic connecting users and external services. The MCX516A-CCAT efficiently supports both communication patterns through intelligent packet management and high-bandwidth architecture.

Private Cloud Deployments

Private cloud infrastructures demand secure, reliable, and scalable networking. The adapter enables enterprise organizations to build high-performance private cloud environments that support virtual machines, containers, and cloud-native applications.

Hybrid Cloud Connectivity

Hybrid cloud environments require seamless communication between on-premises infrastructure and public cloud resources. The adapter delivers the performance needed for secure, high-speed data movement across interconnected environments.

Enterprise Security and Reliability Features

Security remains an essential consideration within enterprise networking. The MCX516A-CCAT incorporates enterprise-class reliability features that support secure communication while maintaining operational stability throughout continuous production environments.

High-quality components, intelligent firmware management, and advanced error handling contribute to long-term reliability. These characteristics make the adapter suitable for mission-critical deployments where network availability directly affects business operations.

Reliable Enterprise Operation

Continuous data center operation requires hardware capable of maintaining stable performance under demanding conditions. The adapter is engineered for sustained enterprise workloads with consistent throughput and dependable connectivity.

Firmware Management

Enterprise firmware support allows administrators to maintain compatibility, implement feature enhancements, and improve long-term operational stability through controlled update processes.

Scalability for Future Infrastructure Growth

Organizations continuously expand their computing resources as application demands increase. Investing in high-performance networking hardware helps ensure future scalability without requiring frequent infrastructure replacement. The MCX516A-CCAT supports long-term growth by providing bandwidth capacity suitable for evolving enterprise workloads.

Whether expanding virtualization clusters, deploying additional storage nodes, implementing software-defined networking, or increasing cloud infrastructure, the adapter provides sufficient networking performance to accommodate future business requirements.

Data Center Expansion

Growing organizations require networking hardware capable of integrating seamlessly into expanding infrastructures. The ConnectX-5 EN platform supports incremental scaling while maintaining consistent network performance across larger deployments.

Long-Term Investment Value

High-performance enterprise adapters often remain in production for many years due to their reliability, compatibility, and extensive feature sets. The MCX516A-CCAT represents a valuable long-term networking investment for organizations prioritizing performance, scalability, and operational efficiency.

Deployment Across Multiple Enterprise Workloads

The versatility of the Mellanox MCX516A-CCAT allows deployment across numerous enterprise environments including virtualization clusters, cloud platforms, software-defined storage, enterprise databases, media production, telecommunications infrastructure, financial computing, scientific research, artificial intelligence platforms, machine learning clusters, content delivery systems, cybersecurity platforms, and large-scale analytics environments.

Its combination of high throughput, low latency, advanced hardware acceleration, enterprise reliability, broad operating system compatibility, and intelligent networking architecture enables organizations to build scalable infrastructures capable of supporting current operational requirements while remaining prepared for future technological advancements. The ConnectX-5 EN 100-Gigabit Ethernet Adapter continues to serve as a dependable networking solution for enterprises seeking maximum performance, efficient resource utilization, and reliable high-speed Ethernet connectivity throughout modern data center environments.