PCI-SIG, the Special Interest Group responsible for the ubiquitous PCI Express® industry-standard I/O architecture, announced today that it has made the release candidate (revision 0.9) of its PCI Express Base 2.0 specification available for review by member companies. With work on this specification nearly complete, PCI-SIG assigned its technical workgroups to investigate and develop the scope for potential extensions of the PCI Express protocols to meet future requirements, such as improved dynamic power controls, optimized synchronization, coherency hints, and more efficient transaction ordering.

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