PCI Express Base 3.0 Specification

The PCI Express Base 3.0 specification is now available to PCI-SIG members. The PCI Express Base 3.0 specification describes the PCI Express architecture, interconnect attributes, fabric management, and the programming interface required to design and build systems and peripherals that are compliant with the PCI Express Specification. PCIe 3.0 technology maintains backward compatibility with previous PCIe architectures and is ideal for high-volume platform I/O implementations across a wide range of topologies (servers, workstations, desktop and mobile personal computers, embedded systems, peripheral devices, etc).

PCIe 3.0 Specifications

  • Ideal for Clients (Desktops and Mobile), Servers (Standard and Enterprise), and Embedded and Communication devices
  • Low-cost, high-performance I/O technology
  • Includes a new 128b/130b encoding scheme
  • Data rate of 8 gigatransfers per second (GT/s)
  • Doubles the interconnect bandwidth over the PCIe 2.0 specification
  • Maintains backward compatibility with previous PCIe architectures
  • Bandwidth near 1 gigabyte per second (GB/s) in one direction on a single-lane (x1) configuration
  • Scales to an aggregate approaching 32 GB/s on a sixteen-lane (x16) configuration
  • 25% efficiency increase for 8 GT/s as compared to the 8b/10b efficiency of previous versions

More information: PCI Express Base 3.0 Specification (pdf)