Nallatech 250S+ – Directly Attached Accelerator (DAA)

The 250S+ is a fully-programmable NIC-sized near-storage accelerator featuring a Xilinx Kintex Ultrascale+ FPGA

NIC Form Factor



  • Fully programmable
  • Near-storage acceleration
  • Xilinx Kintex UltraScale+
  • Available in two configurations:
    • Up to four M.2 NMVe SSDs coupled on-card to the Xilinx FPGA
    • OCuLink break-out cabling allowing the 250S+ to be part of a massively scaled storage array


This PCIe Gen 4-capable accelerator card can be added to PCIe or CAPI-enabled server platforms introducing an energy-efficient acceleration capability for applications including:

  • Database Acceleration
  • In-line Compression/Encryption
  • Checkpoint Restarting
  • Burst Buffer Caching

250S+ FPGA Acceleration Card with Xilinx Kintex KU15P FPGA

Form Factor
» Half-Height, Half-Length PCI Express card
» Dimensions: 167.7 mm x 68.9 mm
» Single or Double-Width options
» Full-Height PCI bracket options

Host Interface
» 8-lane PCI-Express Gen 4
» Actual performance is host computer chipset and operating system dependent

» Xilinx Kintex Ultrascale+ FFVA1156 package
» Default configuration: KU15P
» Core speed grade -2
» Contact Nallatech for other FPGA options

» One bank of DDR4 SDRAM x 80 bits
» 4GB per bank (8GB version also available)
» Transfer Rate: 2400 MT/s

Application Development
» Vivado Design Suite HLx Editions:
HDL and C/C++ with HLS

» On-card power derived from PCIe slot supplies
» Power dissipation is application dependent
» Typical FPGA power consumption 25~50W
» Card designed to deliver up to 75W power  consumption

» Manufactured to ISO9001:2008 IPC JSTD-001 -Class III
» RoHS compliant

Power Supply Monitoring & Reporting
» Voltage monitoring
» Temperature monitoring
» Fault condition reporting to FPGA

Storage Options
» Four on-board 960GB NVMe SSD sticks
» Four on-board 1.92TB NVMe SSD sticks
» Four OCuLink cables
» Four MiniSAS-HD cables

» Single-width passive heatsink for FPGA power up to 25W
» Double-width passive heatsink for FPGA power up to 50W

» Cooling: Air convection
» Operating temperature: 5°C to 35°C

» 250S+ FPGA card
» Built-In-Self-Test (BIST)
» 1 year access to online support lounge
» 1 year hardware warranty

Customization: Technical specifications (e.g. FPGA type, size, exter- nal memory capacity etc.) can be modified to meet the exact needs of commercial customer applications as off-the-shelf product available to the general market.

View All Nallatech FPGA Cards

250S+ Datasheet (304KB)

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