If you’re looking for the 10 best 25GbE NICs for 2026 that will boost your network speed, I recommend models based on Mellanox ConnectX-4 and MCX512A-ACAT controllers. These cards support dual SFP28 ports, PCIe 3.0 or 4.0 interfaces, and advanced features like RDMA, VXLAN, and FCoE for high performance. They’re ideal for data centers, cloud, and HPC environments. Keep reading to explore the top options and what makes them stand out.
Key Takeaways
- Select NICs supporting dual 25GbE SFP28 ports for maximum bandwidth and flexibility.
- Prioritize models with advanced offloading features like RDMA, TSO, and jumbo frames for enhanced performance.
- Ensure compatibility with your server’s PCIe slots, operating system, and cabling options (DAC, optics, AOCs).
- Opt for NICs built on reliable controllers such as Mellanox ConnectX-4 or MCX512A-ACAT for enterprise-grade performance.
- Consider energy-efficient models with low power consumption and robust cooling features for optimal data center deployment.
More Details on Our Top Picks
25GbE Network Card with Mellanox ConnectX-4
If you’re looking for a reliable 25GbE NIC for enterprise use, the Mellanox ConnectX-4-based network card stands out. It features dual-SFP28 ports, supporting high-speed fiber-optic media, DAC, and AOC, with port rates up to 25Gbps. The card connects via PCIe 3.0 x8, ensuring fast data transfer and broad compatibility with Windows Server, Windows, and Ubuntu. Designed for demanding environments, it supports advanced features like VLAN tagging, iSCSI, NVMe, and network virtualization. With a power draw of just 10.1W and robust environmental specs, this card delivers enterprise-grade performance and reliability for high-speed network needs.
- Interface:PCIe 3.0 x8
- Ports:2 SFP28
- Speed Support:1/10/25Gbps
- Compatibility:Windows, Linux, Ubuntu
- Protocol Support:SR-IOV, NVGRE, VXLAN
- Additional Technologies:LED indicators, Power management
- Additional Feature:Supports VLAN tags and priority
- Additional Feature:LED indicators for port activity
- Additional Feature:Supports environmental standards
Ethernet Network Card with SFP28 Ports and PCIe 4.0
The Ethernet Network Card with SFP28 ports and PCIe 4.0 stands out as an ideal choice for high-performance data centers and enterprise environments that demand fast, flexible connectivity. It features two SFP28 ports compatible with DAC, optics, and AOCs, supporting data rates up to 25 GbE per port. Powered by the Intel E810 controller and utilizing PCIe 4.0 x8 lanes, it delivers high throughput and low latency. Its compatibility with Windows, Linux, VMware, and ESXi makes it versatile across various systems. With support for jumbo frames, RDMA, RoCEv2, and SR-IOV, this card offers robust performance for demanding networking applications.
- Interface:PCIe 4.0 x8
- Ports:2 SFP28
- Speed Support:1/10/25Gbps
- Compatibility:Windows, Linux, VMware
- Protocol Support:RDMA, RoCEv2, iWARP
- Additional Technologies:Jumbo Frames, DPDK
- Additional Feature:Supports jumbo frames up to 9.5KB
- Additional Feature:Available in low profile/full height
- Additional Feature:Compatible with multiple OSes
Vogzone 25GbE NIC Card for Mellanox MCX512A-ACAT
For data centers and high-performance computing environments seeking reliable, high-speed network connectivity, the Vogzone 25GbE NIC Card for Mellanox MCX512A-ACAT stands out with its dual SFP28 ports supporting 25GbE. It features a PCIe 3.0 x8 interface, compatible with various operating systems like Windows, Linux, VMware, and more. Powered by Mellanox ConnectX-5 En controller, it delivers high packet rates, throughput, and low CPU utilization. The card supports RDMA, Jumbo Frames, and advanced virtualization technologies like SR-IOV. Its high bandwidth, low latency, and flexible network options make it ideal for demanding data center, cloud, and HPC applications.
- Interface:PCIe 3.0 x8
- Ports:2 SFP28
- Speed Support:1/10/25Gbps
- Compatibility:Windows, Linux, VMware, Citrix
- Protocol Support:RDMA, iSCSI, TCP/IP
- Additional Technologies:Infiniband, NVMe offloading
- Additional Feature:NVIDIA ASAP² offload technology
- Additional Feature:Supports I/O virtualization SR-IOV
- Additional Feature:Infiniband high bandwidth tech
25GbE Network Card with Mellanox ConnectX-4 PCIe Adapter
Choosing the right 25GbE NIC can considerably boost network performance in demanding environments, and the Mellanox ConnectX-4 PCIe Adapter stands out for those seeking high-speed, reliable connectivity. This network card features dual-SFP28 ports and supports 1, 10, and 25 Gbps connections, making it versatile for virtualization and data centers. Built on Mellanox’s ConnectX-4 controller, it offers excellent performance, scalability, and advanced features like RDMA, VXLAN, and jumbo frames. With PCIe v3.0 x8 interface, it reduces cabling complexity and improves server utilization. Plus, its 1-year warranty and 24/7 support assure dependable operation for critical workloads.
- Interface:PCIe 3.0 x8
- Ports:2 SFP28
- Speed Support:1/10/25Gbps
- Compatibility:Windows, Linux, VMware, FreeBSD
- Protocol Support:RDMA, iSCSI, FCoE
- Additional Technologies:DPDK, NVGRE, VXLAN
- Additional Feature:Supports advanced encapsulation tunnels
- Additional Feature:Enables network load balancing
- Additional Feature:Supports network virtualization software
25GbE Network Card with Mellanox ConnectX-4 Chipset
If you’re seeking a high-performance network card tailored for virtualization and data-intensive tasks, the 25GbE NIC featuring Mellanox ConnectX-4 chipset is an excellent choice. It offers dual-SFP28 ports and a PCIe 3.0 x8 interface, supporting 1/10/25G connections. Designed to enhance network infrastructure, it supports RDMA, Jumbo Frames, FCoE, and more, making it ideal for demanding environments. Compatibility spans Windows, Linux, VMware, and other platforms, with straightforward installation via driver or website. Plus, LR LINK provides reliable support with a 3-year warranty and lifetime technical assistance, ensuring your network stays fast and stable.
- Interface:PCIe 3.0 x8
- Ports:2 SFP28
- Speed Support:1/10/25Gbps
- Compatibility:Windows, Linux, VMware, FreeBSD
- Protocol Support:RDMA, iSCSI, FCoE
- Additional Technologies:Traffic balancing, Load offloading
- Additional Feature:Supports network scalability features
- Additional Feature:Supports 3-year warranty
- Additional Feature:Includes lifetime technical support
Vogzone 25Gb PCIe NIC Network Card with Dual Ports
The Vogzone 25Gb PCIe NIC Network Card with Dual Ports stands out as an excellent choice for data centers and enterprise environments that demand high-speed, reliable network connectivity. Featuring the Broadcom BCM57414B controller, it supports 25GbE, 10GbE, and 1GbE speeds, with dual SFP28 ports for flexible connections. Its PCIe v3.0 x8 interface guarantees fast data transfer, ideal for demanding applications. With advanced offloading features like TCP/IP checksum offloads and SR-IOV, it boosts efficiency. Broad OS compatibility, including Windows, Linux, and VMware, makes it versatile. This card delivers stable performance for high data transfer needs in critical network setups.
- Interface:PCIe 3.0 x8
- Ports:2 SFP28
- Speed Support:1/10/25Gbps
- Compatibility:Windows, Linux, VMware, FreeBSD
- Protocol Support:SR-IOV, RDMA, iSCSI
- Additional Technologies:SR-IOV, Infiniband
- Additional Feature:Supports Wake-on-LAN (WOL)
- Additional Feature:Includes low-profile bracket
- Additional Feature:Supports advanced offloading features
GLOTRENDS 2-Port 25Gb SFP28 Network Card
The GLOTRENDS 2-Port 25Gb SFP28 Network Card stands out for data centers demanding high-performance, flexible connectivity, especially thanks to its support for optical modules and DAC cables. Equipped with the Broadcom BCM57414 controller, it offers dual 25GbE ports and supports various configurations, including SFP28/SFP+ modules and cables. Its PCIe 3.0 x8 interface ensures fast data transfer, while features like RDMA, virtualization support, and remote boot options enhance manageability. Compatible with multiple operating systems, it’s ideal for demanding environments that need reliable, scalable, and adaptable network solutions.
- Interface:PCIe 3.0 x8
- Ports:2 SFP28
- Speed Support:1/10/25Gbps
- Compatibility:Windows, Linux, VMware
- Protocol Support:RoCE, NVGRE, DCB
- Additional Technologies:PXE boot, UEFI support
- Additional Feature:Supports DCB and NVGRE
- Additional Feature:Supports remote boot options
- Additional Feature:Not compatible with Infiniband RDMA
Vogzone 25GbE NIC Card for Mellanox ConnectX-4 Lx
Designed for high-performance data centers, the Vogzone 25GbE NIC Card for Mellanox ConnectX-4 Lx stands out with its dual SFP28 ports supporting up to 25GbE speeds, making it an ideal choice for network administrators seeking reliable, scalable, and versatile connectivity solutions. It features the Mellanox ConnectX-4 Lx chipset, ensuring high bandwidth and low latency. Compatible with multiple operating systems like Windows, Linux, VMware, and FreeBSD, it offers flexibility across different environments. With PCIe 3.0 x8 interface, I/O virtualization support, and advanced technologies like RDMA and SR-IOV, it delivers efficient, high-speed network performance suitable for demanding data centers.
- Interface:PCIe 3.0 x8
- Ports:2 SFP28
- Speed Support:1/10/25Gbps
- Compatibility:Windows, Linux, VMware, FreeBSD
- Protocol Support:SR-IOV, Infiniband, ASAP²
- Additional Technologies:ASAP², SR-IOV, Offload
- Additional Feature:NVIDIA ASAP² offload tech
- Additional Feature:Supports high packet rates
- Additional Feature:Features hardware-based I/O isolation
10/25GbE PCIe Dual SFP28 Ethernet Adapter Card
If you’re seeking a high-performance network interface for demanding data center or enterprise environments, the 25GbE PCIe Dual SFP28 Ethernet Adapter Card stands out thanks to its built-in Mellanox ConnectX-4 chipset. This card delivers dual 25Gbps ports with support for various Ethernet standards, including 10G and 25G, via PCIe 3.0 x8. Its advanced features, like RDMA, kernel bypass, and end-to-end QoS, optimize traffic flow and reduce CPU load. Compatible with multiple operating systems, it supports various cabling options, making it versatile for enterprise, HPC, and high-performance computing setups. Installation is straightforward, and it offers both low-profile and full-height brackets for flexible deployment.
- Interface:PCIe 3.0 x8
- Ports:2 SFP28
- Speed Support:1/10/25Gbps
- Compatibility:Windows, Linux, VMware, FreeBSD
- Protocol Support:RDMA, TCP/IP, Jumbo Frames
- Additional Technologies:Kernel bypass, Congestion control
- Additional Feature:Supports multiple Ethernet standards
- Additional Feature:Firmware update via QR code
- Additional Feature:Suitable for gaming and HPC
Vogzone 25Gb PCIe NIC Ethernet Card with SFP28
For data centers seeking high-performance, reliable network connectivity, the Vogzone 25Gb PCIe NIC Ethernet Card with SFP28 stands out thanks to its dual SFP28 ports supporting 1GbE, 10GbE, and 25GbE speeds. Built on the Intel E810-XXVAM2 controller, it offers robust traffic management, load balancing, and on-chip QoS. With PCIe v4.0 support, it delivers high data transfer rates and broad compatibility with Windows, Linux, FreeBSD, and VMware. Designed for enterprise and data center environments, it guarantees scalable, low-latency connections, making it a solid choice for boosting network performance in demanding setups.
- Interface:PCIe 4.0 x8/x16
- Ports:2 SFP28
- Speed Support:1/10/25Gbps
- Compatibility:Windows, Linux, VMware, FreeBSD
- Protocol Support:RDMA, iSCSI, FCoE
- Additional Technologies:Traffic management, QoS
- Additional Feature:Supports PCIe v4.0
- Additional Feature:Features on-chip QoS
- Additional Feature:Supports load balancing
Factors to Consider When Choosing a 25GbE NIC
When selecting a 25GbE NIC, I focus on compatibility with my system, making sure it fits both hardware and software requirements. I also consider port options, speed capabilities, and supported protocols to match my network needs. Finally, I evaluate the physical size, power consumption, and cooling needs to guarantee smooth, reliable operation.
Compatibility With Systems
Choosing a 25GbE NIC requires careful attention to compatibility with your system to guarantee smooth operation. First, confirm the NIC supports your operating system, whether it’s Windows, Linux, or VMware, for seamless integration. Next, verify that your server or workstation’s PCIe slot matches the NIC’s interface requirements, such as PCIe 3.0 or 4.0. It’s also important to verify that the NIC’s network protocols and standards—like 25GbE, 10GbE, iSCSI, or RDMA—are compatible with your existing network infrastructure. Additionally, check the physical form factor—full-height or low-profile—to ensure it fits your hardware chassis. Finally, review the supported transceiver types, such as SFP28, DAC, or AOC, to match your cabling and switch hardware, avoiding connectivity issues.
Port and Speed Options
Port and speed options play a vital role in selecting the right 25GbE NIC, as they directly influence network performance and flexibility. Most 25GbE NICs come with dual SFP28 ports, offering connection redundancy and multiple setup options. The supported port speeds can range from 1GbE to 25GbE, allowing scalability as network demands grow. Many NICs also support multi-speed auto-negotiation, enabling smooth operation across different network infrastructures. The choice of port type—such as Direct Attach Copper (DAC), fiber, or Active Optical Cables (AOC)—affects compatibility with various switches and transceivers. Multirate capabilities ensure future-proofing, letting you upgrade network speeds without replacing your hardware. Considering these options helps tailor your network setup for peak performance and adaptability.
Protocol and Feature Support
Selecting a 25GbE NIC requires careful attention to protocol and feature support, as these determine the card’s performance and compatibility with your network environment. I look for support for essential protocols like RDMA (RoCE v1/v2), iSCSI, FCoE, and Jumbo Frames to guarantee fast data transfer and smooth virtualization. Compatibility with features such as SR-IOV and VMDq is vital for efficient virtualization and resource management. Advanced offloading capabilities like TCP/IP checksum offload, LSO, and TSO help reduce CPU load and boost throughput. I also verify support for network virtualization technologies such as VXLAN, NVGRE, and Geneve, which enable scalable network architectures. Finally, I check for compatibility with management and boot protocols like PXE, UEFI, and iSCSI for seamless remote deployment and management.
Physical Form Factor
The physical form factor of a 25GbE NIC plays a essential role in guaranteeing it fits seamlessly into your hardware setup. It determines compatibility with your server or workstation chassis, whether it’s low-profile or full-height. Low-profile NICs are ideal for compact spaces, while standard-height cards suit larger server slots. The size and shape also impact installation ease and airflow within your system, affecting cooling efficiency. Some NICs offer interchangeable brackets, providing flexibility for different mounting needs. Picking the right form factor is key to avoiding installation issues and ensuring maximum performance, especially in high-density or multi-slot server environments. By understanding your hardware specifications and space constraints, you can select a NIC that fits perfectly and maintains system stability.
Power and Cooling Needs
When choosing a 25GbE NIC, paying close attention to its power and cooling requirements is crucial to guarantee reliable performance. Make sure the NIC’s maximum power dissipation fits within your server’s power supply capacity to avoid overheating issues. Verify that its operating temperature range matches your data center’s environment, especially if you’re working in a high-temperature setting. Consider whether the NIC needs additional cooling features, like heatsinks or enhanced airflow, to maintain ideal performance. Check if it supports low-power modes or energy-efficient features, which can help reduce thermal output during periods of low activity. Finally, ensure your server chassis provides adequate airflow and ventilation to keep temperatures stable, safeguarding your NIC’s longevity and consistent operation.
Vendor Reliability
Choosing a dependable vendor is vital because it directly impacts the quality and longevity of your 25GbE NIC. A trusted vendor offers extensive technical support and quick customer service, helping you resolve issues efficiently. Established brands tend to provide longer warranties and better post-sale assistance, guaranteeing your device remains functional over time. You can gauge a vendor’s reputation through customer reviews, industry certifications, and their track record of delivering quality networking products. Consistent product quality and adherence to industry standards reduce hardware failure risks. Additionally, a vendor’s commitment to regular firmware updates and security patches is key for maintaining compatibility and security as technology evolves. Prioritizing vendor reliability ensures your investment remains protected and performs at its best for years to come.
Frequently Asked Questions
How Compatible Are These NICS With Different Server Operating Systems?
These NICs are generally highly compatible with various server operating systems like Windows Server, Linux distributions, and VMware. I’ve found most manufacturers provide drivers and software support, ensuring smooth integration. However, it’s always wise to double-check the specific model’s compatibility with your OS version. I recommend visiting the manufacturer’s website for the latest drivers and compatibility info to avoid any surprises during setup.
What Is the Typical Latency Introduced by 25GBE NICS?
Latency from 25GbE NICs is usually impressively low, often around 1 to 2 microseconds, making it nearly invisible in everyday use. It’s like whispering in a thunderstorm—hard to notice, yet powerful. This minimal delay guarantees smooth data transfer, perfect for demanding applications. So, if you’re worried about lag, these NICs keep your network quick and snappy, proving that speed and efficiency can indeed go hand in hand.
How Do These NICS Handle Network Congestion and Packet Loss?
I’ve found that 25GbE NICs handle network congestion and packet loss quite well, thanks to advanced features like flow control and TCP offloading. They dynamically adjust to traffic spikes, reducing packet loss and maintaining stable connections. When congestion occurs, they prioritize critical data and manage retransmissions efficiently, ensuring minimal impact on performance. Overall, they keep my network running smoothly even during heavy loads.
Are There Specific Cooling Requirements for High-Performance 25GBE NICS?
Cooling a high-performance 25GbE NIC is like tending a sports car’s engine—you need to keep it cool to run smoothly. I recommend ensuring proper airflow in your server or workstation, using heatsinks or fans if necessary. Many NICs come with built-in heat sinks, but if you’re pushing them hard, extra cooling can prevent overheating and maintain peak performance. Proper cooling is essential for reliability and longevity.
What Is the Warranty and Support Policy for These Network Cards?
The warranty and support policies for these 25GbE NICs typically include a standard one-year warranty, covering manufacturing defects and hardware failures. Many manufacturers also offer extended support plans or premium support options for faster assistance. I recommend checking the specific product details before purchasing, as support levels can vary. Having reliable support guarantees you get prompt help if any issues arise, keeping your network running smoothly.
Conclusion
Choosing the right 25GbE NIC is like finding the perfect key to unlock lightning-fast network speeds. With options like Mellanox-based cards and versatile SFP28 ports, you can boost your network performance effortlessly. Just remember to consider compatibility and your specific needs. Investing in the right NIC can transform your setup from sluggish to sprinting, making your network as swift and smooth as a well-oiled machine.
