PCI Express System Architecture

PCI Express is the third generation of PCI (Peripheral Component Interconnect) technology that is used to connect IO peripheral devices in computer systems. PCI Express provides higher performance, enhanced capability and at a lower cost than its predecessors, PCI and PCI-X. PCI Express achieves these advantages by utilizing fairly recent advances in high-speed point-to-point interconnects, while maintaining a significant level of backwards compatibility to BIOS and Device Driver software. It is