Intel® Ethernet Converged Network Adapter X520-QDA1


  • Product Collection 10/25/40 Gigabit Ethernet Adapters
  • Status Discontinued
  • Launch Date Q2'14
  • Vertical Segment Server
  • Cable Medium Copper
  • Cabling Type QSFP+ Direct Attach Twin Axial Cabling up to 10m
  • Bracket Height Low Profile and Full Height
  • TDP 20 W

Supplemental Information

Networking Specifications

  • Port Configuration Single
  • Intel® Virtualization Technology for Connectivity (VT-c) Yes
  • Speed & Slot Width 8.0 GT/s, x 8 Lane
  • Controller Intel 82599

Package Specifications

  • System Interface Type PCIe v3.0 (8.0 GT/s)
  • Low Halogen Options Available No

Intel® Virtualization Technology for Connectivity

Advanced Technologies

Ordering and Compliance

Retired and discontinued

Intel® Ethernet Converged Network Adapter X520-QDA1, retail unit

  • Ordering Code X520QDA1

Intel® Ethernet Converged Network Adapter X520-QDA1, OEM Gen

  • Ordering Code X520QDA1G1P5

Trade compliance information

  • ECCN 5A992C
  • CCATS G135872
  • US HTS 8517620090

PCN/MDDS Information

Compatible products

Intel® Server System R2000WT Family

Intel® Server Board S2600WT Family

Product Name Status SortOrder Compare
All | None
Intel® Server Board S2600WTTR Launched
Intel® Server Board S2600WT2R Launched
Intel® Server Board S2600WTTS1R Launched

Intel® Server Board S7200AP Family

Product Name Status SortOrder Compare
All | None
Intel® Server Board S7200AP Discontinued
Intel® Server Board S7200APL Discontinued

Intel® Compute Module HNS7200AP Family

Downloads and Software

Launch Date

The date the product was first introduced.


Thermal Design Power (TDP) represents the average power, in watts, the processor dissipates when operating at Base Frequency with all cores active under an Intel-defined, high-complexity workload. Refer to Datasheet for thermal solution requirements.

Flexible Port Partitioning

Flexible Port Partitioning (FPP) technology utilizes industry standard PCI SIG SR-IOV to efficiently divide your physical Ethernet device into multiple virtual devices, providing Quality of Service by ensuring each process is assigned to a Virtual Function and is provided a fair share of the bandwidth.

Virtual Machine Device Queues (VMDq)

Virtual Machine Device Queues (VMDq) is a technology designed to offload some of the switching done in the VMM (Virtual Machine Monitor) to networking hardware specifically designed for this function. VMDq drastically reduces overhead associated with I/O switching in the VMM which greatly improves throughput and overall system performance


Single-Root I/O Virtualization (SR-IOV) involves natively (directly) sharing a single I/O resource between multiple virtual machines. SR-IOV provides a mechanism by which a Single Root Function (for example a single Ethernet Port) can appear to be multiple separate physical devices.


iWARP delivers converged, low-latency fabric services to data centers through Remote Direct Memory Access (RDMA) over Ethernet. The key iWARP components that deliver low-latency are Kernel Bypass, Direct Data Placement, and Transport Acceleration.

Intel® Data Direct I/O Technology

Intel® Data Direct I/O Technology is a platform technology that improves I/O data processing efficiency for data delivery and data consumption from I/O devices. With Intel DDIO, Intel® Server Adapters and controllers talk directly to the processor cache without a detour via system memory, reducing latency, increasing system I/O bandwidth, and reducing power consumption.