Intel Ethernet Network Adapter E835-XXVDA2 - 2 Ports - 25 Gigabit Ethernet - PCI Express 4.0 x8 - SFP28

The Intel Ethernet Network Adapter E835-XXVDA2 is a high-performance dual-port 25 Gigabit Ethernet network interface card designed for data centers and enterprise environments. It leverages PCI Express 4.0 x8 interface to deliver up to 50 Gbps aggregate bandwidth (25 Gbps per port bidirectional), ensuring low latency and high throughput for demanding workloads such as virtualization, cloud computing, and storage.

Advantages

With support for RDMA (RoCEv2 and iWARP), SR-IOV, and advanced virtualization offloads, this adapter reduces CPU overhead and improves application performance. It also features Intel Ethernet Adaptive Virtual Function (ADQ) and Dynamic Device Personalization (DDP) for optimized traffic handling. The included full-height and low-profile brackets ensure compatibility with various server chassis.

Suitable for

• Enterprise data centers requiring high-speed connectivity
• Virtualized environments with SR-IOV and VMDq
• Storage networks using NVMe over TCP or iSCSI
• High-frequency trading and real-time analytics

Key specifications

• Connectivity Technology: Wired
• Interface Type: PCI Express 4.0 x8
• Ports: 2 x 25 Gigabit Ethernet SFP28
• Data Link Protocol: 25 Gigabit Ethernet, 10 Gigabit Ethernet, Gigabit Ethernet
• Data Transfer Rate: 50 Gbps (25 Gbps per port bidirectional)
• Controller Processor: Intel Ethernet Controller E835-XXVDA2
• Form Factor: Plug-in Card (Low Profile)
• Bracket Included: Full-height and Low-profile
• RDMA Support: RoCEv2, iWARP
• Virtualization Features: SR-IOV (up to 256 VFs), VMDq (up to 256 queues), VXLAN, NVGRE, GENEVE
• Advanced Features: Intel Ethernet Adaptive Virtual Function (ADQ), Dynamic Device Personalization (DDP), NVMe over TCP, DPDK support
• Network Standards: IEEE 802.3ae, 802.3aq, 802.3ba, 802.3by, 802.3cd
• Power Consumption (Typical): 10.5 W
• Operating Temperature: 0°C to 55°C
• Supported Operating Systems: Windows Server, Linux, VMware ESXi, FreeBSD
• Cabling Type: SFP28 Direct Attach Copper (DAC) or Fiber Optic

Recommendations

For optimal performance, use with SFP28 transceivers or DAC cables rated for 25 Gbps. Ensure your system has a PCIe 4.0 x8 slot available. This adapter is ideal for upgrading existing 10 GbE networks to 25 GbE without replacing cabling infrastructure when using SFP28 modules.