Mellanox ConnectX-5 EN MCX516A-CCAT Network Card - 100GbE Dual-Port PCIe NIC with RDMA
Product Details:
Brand Name: | Mellanox |
Model Number: | MCX516A-CCAT |
Document: | connectx-5-en-card.pdf |
Payment & Shipping Terms:
Minimum Order Quantity: | 1pcs |
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Price: | Negotiate |
Packaging Details: | outer box |
Delivery Time: | Based on inventory |
Payment Terms: | T/T |
Supply Ability: | Supply by project/batch |
Detail Information |
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Products Status: | Stock | Application: | Server |
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Interface Type:: | Network | Ports: | Dual |
Max Speed: | 25GbE | Connector Type: | SFP28 |
Type: | Wired | Condition: | New And Original |
Warranty Time: | 1 Year | Model: | MCX516A-CCAT |
Name: | Mellanox Network Card CX516A ConnectX-5 100GbE MCX516A-CCAT Dual-Port QSFP28 PCI-E Adapter | Keyword: | Mellanox Network Card |
Product Description
The Mellanox ConnectX-5 EN network card, model MCX516A-CCAT, represents a significant advancement in high-performance Ethernet adapter technology. This intelligent RDMA-enabled network interface card delivers exceptional throughput with up to 100Gb/s per port while maintaining ultra-low latency of just 750 nanoseconds. Engineered for demanding Web 2.0, cloud, storage, and telecommunications environments, this advanced NIC card provides comprehensive hardware offload capabilities that dramatically reduce CPU utilization while accelerating critical network functions.
- Dual-port 100GbE connectivity with PCIe 4.0 support
- Industry-leading 750ns latency and 200Mpps message rate
- Comprehensive hardware offloads for virtualization and storage
- Advanced RoCE (RDMA over Converged Ethernet) technology
- Multiple form factor compatibility including OCP 3.0
- Dual-port 100GbE connectivity per network card
- PCI Express 4.0 and 3.0 compatibility
- Hardware offloads for NVMe over Fabrics
- Open vSwitch (OvS) acceleration technology
- SR-IOV virtualization support (up to 512 VFs)
- Multi-host and Socket Direct configurations
- Comprehensive storage protocol offloads
- Advanced quality of service (QoS) capabilities
The ConnectX-5 EN network card incorporates several groundbreaking technologies that set it apart from conventional NIC cards. Mellanox ASAP² (Accelerated Switching and Packet Processing) technology enables full offloading of the virtual switch data plane to the network card hardware, dramatically reducing CPU overhead. The adapter also features innovative RDMA over Converged Ethernet (RoCE) implementation, providing remote direct memory access capabilities over standard Ethernet networks. This advanced NIC card supports hardware-accelerated NVMe over Fabrics, enabling efficient storage access with minimal CPU intervention.
The Mellanox ConnectX-5 network card operates through an intelligent architecture that offloads network processing tasks from the host CPU to specialized hardware on the adapter. The flexible pipeline with programmable parser and match-action tables processes network packets at line speed, while the embedded PCIe switch enables efficient multi-host connectivity. For virtualized environments, the SR-IOV technology provides direct hardware access to virtual machines, bypassing the hypervisor for improved performance. The innovative Host Chaining technology allows direct server-to-server communication without traversing top-of-rack switches, reducing latency and infrastructure costs.
This high-performance network card is ideally suited for multiple demanding environments. In cloud data centers, it enables higher server utilization through advanced virtualization offloads. For storage applications, the adapter provides hardware acceleration for NVMe over Fabrics, delivering exceptional performance for all-flash storage arrays. Telecommunications providers benefit from the card's NFV capabilities and deterministic low latency for voice and video applications. High-performance computing clusters leverage the RDMA capabilities for efficient message passing interface (MPI) operations, while machine learning platforms utilize the GPUDirect technology for accelerated GPU communication.
Parameter | Specification |
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Product Model | MCX516A-CCAT |
Interface Type | Dual-port QSFP28 |
Max Speed | 100Gb/s per port |
Host Interface | PCIe 4.0 x16 |
Latency | 750ns |
Message Rate | Up to 200Mpps |
Form Factor | Standard PCIe HHL |
Supported Speeds | 1, 10, 25, 40, 50, 100 GbE |
The Mellanox ConnectX-5 network card delivers significant advantages over previous generation adapters and competing products. With 2.5x higher message rate compared to earlier solutions, this NIC card achieves unprecedented performance levels. The advanced hardware offload capabilities reduce CPU utilization by up to 50% for network-intensive workloads. Unique features like Host Chaining technology eliminate the need for expensive top-of-rack switches in specific configurations, substantially reducing total cost of ownership. The comprehensive virtualization support enables higher VM density with guaranteed quality of service, making this network card an ideal solution for modern cloud infrastructure.
We provide comprehensive support for all our networking products, including this advanced Mellanox network card. Our services include a standard 3-year warranty with optional extensions available. We maintain over 10 million dollars in inventory to ensure prompt delivery, typically shipping within 24-48 hours for in-stock items. Our technical team offers 24/7 consultation and troubleshooting support, with remote configuration assistance available. For large deployments, we provide custom integration services and compatibility validation with your existing infrastructure.
The MCX516A-CCAT network card is compatible with all major server platforms supporting PCIe 3.0 or 4.0 interfaces, including systems from HPE, Cisco, and Supermicro. It supports various operating systems including RHEL/CentOS, Windows Server, VMware, and FreeBSD.
Yes, this versatile network card supports multiple Ethernet speeds including 1, 10, 25, 40, and 50 GbE, providing flexibility for various network infrastructure requirements and allowing seamless integration with existing equipment.
The ConnectX-5 network card includes comprehensive virtualization capabilities including SR-IOV with support for up to 512 virtual functions, NPAR technology, and hardware quality of service enforcement for guaranteed VM performance.
When deploying the ConnectX-5 network card, ensure proper cooling as high-performance network cards generate significant heat. Verify PCIe slot compatibility - while the card is electrically compatible with PCIe 3.0, optimal performance requires PCIe 4.0 for full bandwidth utilization. For RoCE operation, ensure your network infrastructure supports Data Center Bridging (DCB) features, particularly PFC and ETS. When using Mellanox Socket Direct or Multi-Host configurations in virtualization scenarios, consult the technical documentation for specific limitations. Always use the latest firmware and drivers available from the manufacturer website for optimal performance and security.

With over a decade of industry experience, we have established ourselves as a leading provider of high-performance networking solutions. Our extensive manufacturing capabilities and strong technical team support enable us to deliver premium products at competitive prices. We maintain partnerships with top-tier brands including Mellanox, Ruckus, Aruba, and Extreme Networks, ensuring access to cutting-edge technology.
Our inventory exceeds $10 million, comprising original brand new equipment including network switches, network cards, wireless access points, controllers, and cabling solutions. We specialize in large-volume supply with diverse product selections to meet enterprise requirements. Our commitment extends beyond product delivery with 24/7 customer consultation and technical support services. Through our professional sales and technical teams, we have built a strong reputation in global markets for reliability and service excellence.