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.
More information
Sites 5
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.
Standards development group. Offers details of technology specifications, document review and compliance testing, test software and checklists and press releases.
Article outlining the components of the protocol and competing formats.
Article including a technology overview, comparison with older buses and considerations of its future prospects.
(April 21, 2004)
Article covering history of the bus market and an explanation of how the specification works.
(December 06, 2003)
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.
Article outlining the components of the protocol and competing formats.
Standards development group. Offers details of technology specifications, document review and compliance testing, test software and checklists and press releases.
Article including a technology overview, comparison with older buses and considerations of its future prospects.
(April 21, 2004)
Article covering history of the bus market and an explanation of how the specification works.
(December 06, 2003)
Last update:
October 29, 2023 at 5:35:02 UTC
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- Recently edited by merlin1
- Recently edited by merlin1