The InfiniBand DDR Link Layer Core from Polybus Systems offers enhanced data transfer capabilities with Double Data Rate (DDR) technology. Running at 250 MHz, it achieves 20 Gbps bidirectional communication, requiring a 5 GHz SerDes. It's suitable for high-speed data exchanges in advanced Xilinx and Altera FPGA platforms, providing middle-grade performance through efficient integration in networked systems.