Directory of PCI Express Resources

Home > Computers > Hardware > Buses > PCI Express

Bus specification designed to supersede PCI. PCI Express (PCIe) provides several improvements over its predecessor:

• It enables Quality of Service (QoS) which is a means to prioritise more time critical traffic (like an audio or video stream) to reduce break up.
• Supports multiple lanes that can be aggregated for a single link to provide increased bandwidth. (Each lane can transmit up to 2.5gb/sec, and the protocol supports up to 32x)
• Uses a point-to-point bus topology where a shared switch replaces the shared bus that PCI used.

NB: PCI-Express is sometimes referred to as 3rd generation I/O (3GIO)architecture.

Resources in This Category

• AnandTech

  http://www.anandtech.com/show/1113
  Article covering history of the bus market and an explanation of how the specification works.

• Ars Technica: PCI Express: An Overview

  http://arstechnica.com/old/content/2004/07/pcie.ars
  Technical overview explaining basic PC system architecture, an explanation of how PCI and PCI-X work, and an outline of the benefits of PCIe, and PCIe to PCI bridging.

• Intel.com

  http://developer.intel.com/technology/pciexpress/devnet/
  Developer network for PCI Express architecture. Offers overview of the specification, introductory videos, details of books for developers, press releases and how to join the network.

• Neoseeker.com

  http://www.neoseeker.com/Articles/Hardware/Features/pciexpresstech/
  Article including a technology overview, comparison with older buses and considerations of its future prospects.

• PCI Express Compliance Testing

  http://www.eurekatech.com/products/pci/pcie_compliance.htm
  Gives an overview of the requirements for PCI Express Compliance testing.

• PCI-SIG

  http://www.pcisig.com/specifications/pciexpress/
  Standards development group. Offers details of technology specifications, document review and compliance testing, test software and checklists and press releases.

• Wikipedia

  http://en.wikipedia.org/wiki/PCI-Express
  Article outlining the components of the protocol and competing formats.

 

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