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PCI Express Websites

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.

1 -

PCI-SIG

Standards development group. Offers details of technology specifications, document review and compliance testing, test software and checklists and press releases.
2 -

Intel.com

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.
3 -

Neoseeker.com

Article including a technology overview, comparison with older buses and considerations of its future prospects.
4 -

Wikipedia

Article outlining the components of the protocol and competing formats.
5 -

PCI Express Compliance Testing

Gives an overview of the requirements for PCI Express Compliance testing.
6 -

Ars Technica: PCI Express: An Overview

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.
7 -

AnandTech

Article covering history of the bus market and an explanation of how the specification works.
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