The PCI Express (PCIe) interface is the dominant high-speed serial interconnect standard for computer architecture. Managed by PCI-SIG, the specification has evolved from a parallel replacement (Gen 1) to a multi-terabit, packet-switched fabric (Gen 7/Gen 8). This report outlines the technical trajectory of the specification, analyzing bandwidth scaling, encoding overhead, and the critical architectural shifts regarding power management and signal integrity.
: Occasionally, PCI-SIG releases snippets or white papers for public viewing to highlight key features of upcoming generations, such as the PCIe 7.0 overview . 2. Evolution of PCIe Specifications (1.0 to 7.0) pci express specification pdf