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PCI Express 2.0 Nears Completion
PCI Express 2.0 Nears Completion
PCI Express 2.0 Nears Completion
PCI Express, version 1.0 which arrived in 2003, is about to enter the next generation with version 2.0. PCI Express 2.0 brings a bevy of changes, starting with a speed boost, according to the PCI Special Interest Group (PCI-SIG) that governs the technology. The PCI-SIG has released a penultimate edition of the basic PCI Express 2.0 specification to its members in version for comments, and the final version is due after a 60-day comment period. The central feature of the base version of PCI Express 2.0 is a speed boost. It doubles each serial line's data transfer rate from 2.5 gigabits per second to 5Gpbs. But future enhancements also are in the works. One will support high-end graphics cards that slurp 225 or 300 watts of power. Finally, a longer-term effort, code-named Geneseo, will let coprocessor cards such as graphics or encryption accelerators be tightly connected to central processors.
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