Intel Ethernet Network Adapter E835-XXVDA4 - PCIe 4.0 x16 Quad-Port 10/25GbE SFP28 Low Profile

In a hyperscale data center, network engineers deploy the Intel Ethernet Network Adapter E835-XXVDA4 to deliver four independent 25GbE links over a single PCIe 4.0 x16 slot, maximizing rack density and throughput for distributed storage and software-defined networking. Built around the Intel Ethernet Controller E835-XXVDA4, this quad-port SFP28 adapter accelerates packet processing with hardware offloads and intelligent queue management, freeing CPU cores for revenue-generating workloads.

Key specifications

• Controller: Intel Ethernet Controller E835-XXVDA4
• Host interface: PCI Express 4.0 x16
• Ports: 4 x SFP28 cages (modules not included)
• Data rate per port: 10/25 GbE (supports 10GBASE-SR/LR and 25GBASE-SR/LR)
• Form factor: Low profile, full-height bracket included
• Virtualization: SR-IOV (up to 128 VFs), VMDq, VXLAN, NVGRE, GENEVE offloads
• RDMA: RoCEv2 and iWARP for low-latency fabric convergence
• Advanced features: Intel ADQ, DDP, DPDK, IEEE 1588 PTP, jumbo frames up to 9.5 KB
• Boot: PXE and iSCSI boot support
• Management: NC-SI, SMBus, IPMI

Why choose it

The E835-XXVDA4 cuts CPU overhead with stateless offloads for VXLAN, NVGRE, and GENEVE, while ADQ and DPDK enable deterministic performance for latency-critical applications. Its PCIe 4.0 x16 host interface provides 32 GT/s per lane, eliminating bottlenecks for four 25GbE ports. With SR-IOV and RDMA, it consolidates network and storage traffic onto a single adapter, reducing cost and complexity in virtualized environments.

Ideal use cases

• High-density 25GbE server connectivity in data centers and private clouds
• Virtualized environments requiring SR-IOV and RDMA for VM-to-VM communication
• Telecom and cloud infrastructure with NFV and SDN workloads
• High-frequency trading and financial services needing ultra-low latency
• Hyper-converged infrastructure and software-defined storage

Good to know

The adapter is compatible with Windows Server, mainstream Linux distributions, VMware ESX/ESXi, and FreeBSD. It supports IEEE 802.3ae, 802.3by, 802.3aq, 802.1Q, 802.1p, and 802.3az standards. LED indicators show link, activity, and speed per port. For optimal performance, pair with Intel-branded SFP28 optics and update to the latest firmware and drivers.