With this Intel Xeon FSB FPGA Accelerator Module you can populate all 4 sockets with different combinations of FPGA acceleators and Intel Xeon processors
FPGA Support: Up to 5 Xilinx Virtex-5 FPGAs within a single Intel Xeon socket.
Configuration: Up to 3 sockets can be populated with FPGA accelerators
Visit the Nallatech website for more information on Customizable FSB Accelerator Platform