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XpressSX AGI-FH400G Agilex™ I-Series SoC Full height, half length PCIe board

Presentation of the Intel® Agilex™ board

Product overview

The XpressSX AGI-FH400G Agilex™ I-Series SoC PCIe board is a full height, half length PCIe Gen5 Network Processing board, featuring the Agilex™ I-Series SoC FPGA and 400Gb Ethernet.

The Intel® Agilex™ board is based on an Intel® Agilex™ I-series SoC FPGA. This device is optimized for applications which are bandwidth intensive and require a high-performance processor interface, supported by the CXL™ standard interface, the PCIe Gen5 x16 interface, and transceiver tiles with data rates up to 116 Gbps.

The FPGA board is delivered with a 2-slot PCIe active heatsink and is specifically optimized for embedded applications.

REFLEX CES & CESNET collaborated to provide a complete solution for Network Security & Monitoring, Smart NIC and Networking Acceleration applications, through the Liberouter project.

Benefits & features

  • Intel® Agilex™ I-Series SoC FPGA
  • Quad Core ARM® Cortex® A53
  • 2700 KLE
  • PCIe Edge Gen5 x16, CXL™ standard
  • 400GbE (8 x 56 Gbps)
  • 3x independent DDR4 banks
  • 4x HSI connectors (PCIe Gen5 x16 EP)


The very first advantage of the Intel® Agilex™ board is the 400 Gigabit Ethernet capability, specially designed for SmartNIC applications.


The FPGA is an Intel® Agilex™ I-Series SoC device.  Agilex™ delivers 2x better fabric performance per watt. Intel® Agilex™I-Series SoC FPGA devices also integrate the quad-core ARM Cortex-A53 processor to provide high system integration.

The Intel® Agilex™ I-Series FPGA has options to integrate Compute Express Link™ (CXL™), an open standard interconnect protocol for high-speed CPU-to-device and CPU-to-memory. This standard is built on the PCIe physical and electrical interface.


The FPGA delivers up to 40% lower power for applications in data center, networking, and edge compute.

FPGAs (Field Programmable Gate Array) are used to offer a high capacity of logic and memory storage.

The System-on-chip (SoC) is an integrated circuit inside the FPGA, most often a CPU processor (central processing unit) and supporting peripherals, that provides more flexibility, integration, and allows the FPGA to better control the board.


Our Intel® Agilex™ board offers primary interfaces and components, such as 400 Gb Ethernet, PCIe Gen5 x16 (CXL™ compatible), HSI connectors (offering transceivers for the PCI Express), power supplies, USB 2.0 port (for JTAG, UART, BMC), high-speed transceivers, DDR4 (on-board and SO-DIMM) interfaces and more. Those components are from Intel ®, Micron Technology, Inc., STMicroelectronics and Cypress Semiconductor.


The Agilex™ board is full height, half length, 2-slot PCI Express form factor, specially designed to fit into various servers and chassis available on the market, and custom rack systems for embedded applications.

The Peripheral Component Interconnect Express, commonly known as PCI Express, is a high-speed serial computer expansion bus standard. Our FPGA board offers up to three a x16 PCI Express slot or two CXL™ standard interface. Added to an Intel® Agilex™ SoC FPGA I-series, this allows our board to be quick and efficient.


Reduce time-to-market of your next embedded project with our Agilex™ SoC board, using the Intel® Quartus Prime development tools. Our board is supported by our firmware, hardware, and software skills and full documentation package and reference designs.


The Intel® Agilex™ board is RoHS and REACH standards compliant.


Our Intel® Agilex™ board is specially designed for our customers needs and specifications.

Our sales team is available to advise you on the best solution to meet your requirements. Contact us at


Block diagram of the Intel® Agilex™ board:

Tech spec

FPGA Configuration

  • Intel® Agilex™ I-Series : AGIB027R29A1E2V
  • Including SoC (Quad Core ARM® Cortex® A53)
  • Flash configuration
  • USB 2.0 Hub for JTAG, UART, BMC, USB2


  • 1x on-board DDR4 (mutual SoC / FPGA), x64 bit bus, 4GBytes up to 2666 MT/s
  • 2x DDR4 SO-DIMM sockets, each capable up to 32GBytes SO-DIMM
  • eMMC or SD Card holder (if used) for SoC


  • 200W max, delivered with 2-slot active heatsink
  • Powered by the PCIe slot and an 8 pin PCIe Aux ATX external connector (additional power)

Board dimensions: Full height half length: 167.7mm x 111.15mm

Operating range: 0°C to 35°C
Storage range: 0°C to 70°C

Communication interfaces

  • PCIe Edge Gen5 x16
  • CXL™ standard compatible*:
    • Open standard interconnection for high-speed CPU-to-device and CPU-to-memory
    • Built on the PCIe physical and electrical interface
  • 8x QSFP56-DD (8x 56G: 400G total)
  • 2x HSI connectors (ARF6-16-L-RA): Total of 16 transceivers for PCIe Gen5 EP, CXL™ standard compatible
  • 2x HSI connectors (ARF6-16-L-RA): Total of 16 transceivers for PCIe Gen5 EP
  • 2x USB-C connectors for HSI Clocks & control signals

*Use of CXL™ features might require separate CXL™ IP license purchase. Please contact Intel® for details.

Other resources

  • Board Management Controller (MAX®10 device)
  • Programmable PLL

Standards and compliance

  • RoHS/REACH compliant
  • UL certified
  • ISO9001 certified


Additional PCIe Gen4 x16 daughter card

The XpressSX AGI-FH400G board needs to be inserted in a PCIe Gen5 compatible server in order to deliver the full PCIe Gen5 x16 performances.

In case the user is only using a PCIe Gen4 compatible server, the XpressSX AGI-FH400G is delivered with this PCIe Gen4 x16 daughter card. This way, the sytem will achieve 2x Gen4 x16 performances similar to PCIe Gen5 x16, using two R-Tile PCIe Hard IPs inside the FPGA.

The daughter card also supports x8x8 bifurcation mode.

Dev Framework

NDK Development Framework



Start your design from standard NIC

  • Provided as a free demo application
  • Network module based on F-Tile 400G Ethernet Hard IP
  • Ultra fast DMA with 400 Gbps throughput based on PCIe Gen5 x16 interface (R-Tile)
  • Easy to use memory interface for single read/write data from/to card
  • Preconfigured DDR4 controller for memory access from the user logic
  • Precise timestamps with 2.5 ns resolution for 400G Ethernet

Easy to use Development Framework

  • Set of open-source IP cores for data manipulation
  • Automatic scripts for complete design synthesis
  • Single make command to create complete FPGA bitstream
  • Bitstream identification through DeviceTree ROM
  • Easy to use software stack in a single RPM package
  • Linux kernel driver, DPDK support, user space library, tools for the configuration of components
  • Easy creation of custom application by user-friendly API for component access and DMA transfers
  • Fully parameterizable and modular hardware and software architecture



  • Full height half length 2-slot PCIe board with active heatsink and PCIe bracket
  • Board Support Package: Manuals, 2D drawing, HDL reference designs (Contact REFLEX CES for PCIe Gen5 CXL™ interface validation)
  • DWF/STEP models (upon request)
  • Online support at
  • NDK package (including DPDK NIC application) provided separately by BrnoLogic
  • 2x HSI cables (ARC6-16-10.0-LU-LD-2-1) and 1x USB-C to USB-C cables (0.72ft), 3.1 Gen2 to connect the PCIe Gen4 x16 daughter card
  • PCIe Gen4 x16 daughter card

Ordering Information

  • XpressSXAGI-FH400GT-ES //  Intel® Agilex™ SoC I-Series ES Silicon (AGIB027R29A1E2VR3), 3 banks DDR4
  • XpressSXAGI-FH400GT // Intel® Agilex™ SoC I-Series (AGIB027R29A1E2V), 3 banks DDR4

Contact sales for availability and pricing


Target Network Applications

Hardware acceleration of precise network monitoring, IDS/IP systems, next generation firewalls, test equipment, Anti DDoS and other time-critical networking applications.

Only one card for 10, 40, 100, 200 and 400 GE link speeds.

Network monitoring probes

▪ high-speed packet capture with up to 512 receive queues, DPDK support
▪ Tracking states of network connections in DRAM memory
▪ Extraction of features for encrypted traffic analysis
▪ PCIe bandwidth can be increased by connector

Security devices

▪ Hardware filters and pattern matching to accelerate IDS/IPS systems
▪ Precise packet filtering and packet capture for lawful interception
▪ Anti DDoS with hardware IP or flow filtering controlled by software


Design services

The card is prepared for custom hardware acceleration in FPGA

We provide FPGA design based on high-speed 400 Gb IP cores for:

▪ packet headers parsing (Ethernet, ICMP, IPv4, IPv6, MPLS, etc.),
▪ packet filtering and classification,
▪ flow cache and connection tracking tables,
▪ fast pattern matching and
▪ many other IP cores for fast packet processing in deep pipelines.

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