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


This PCIe Gen 3-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 3 capable
» 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+

Notice: Nallatech’s PCIe compliant FPGA boards rely on the host’s cooling capabilities to stay within its acceptable operating temperature limits.

The user must make sure that the FPGA application is designed within the power limits documented by Nallatech and that sufficient cooling is provided to make sure the maximum FPGA die temperature is 15C below the maximum operating limit. Nallatech recommends that users perform a thermal characterization of their application in their system to meet these requirements.

» 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)

Contact Nallatech with your FPGA needs

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