The InfiniBand QDR Link Layer Core by Polybus Systems represents the pinnacle of high-speed data transfer technology, adeptly supporting operations up to 80Gigabytes per second in ASICs. It operates at dual speeds—500MHz for ASICs and 250MHz for FPGAs, facilitating both 1X and 4X QDR operations or equivalent DDR configurations in FPGAs. The inclusion of a PCS Layer enhances its compatibility with state-of-the-art platforms like Altera Stratix5GX, Xilinx Kintex7, and Virtex7. This core is pivotal for advanced communications infrastructure, ensuring fluid data streams necessary for high-performance computing and data-intensive applications.