The HP IB 4X DDR CX-2 PCI-e G2 Dual-port HCA is based on the Mellanox ConnectX-2 IB technology. The HP IB 4X DDR PCI-e dual-port is based on the Mellanox InfiniHost III technology. The Mellanox ConnectX-2 InfiniBand technology delivers low-latency and high-bandwidth for performance-driven server and storage clustering applications in High-performance computing (HPC), and enterprise data centers. Parallelized HPC applications, clustered data bases, and latency and bandwidth sensitive transactional services will achieve significant performance improvements resulting in reduced completion time and lower cost per operation.