PCI Express turns 2.0

As expected, PCI Express turned 2.0 by fiat of the PCI Special Interest Group, the industry cooperative that governs the specification and announced the new version Monday.

PCI Express--a modernized sequel to the original PCI (Peripheral Component Interconnect) that spread to essentially every server and PC since it was introduced in the 1990s--can transfer 2.5 gigabits per second on each wire, pin or other electrical connection called "lanes" between a computer and a plug-in device. PCI Express 2.0 doubles that rate to 5Gbps, and as with the existing PCIe, multiple lanes can be ganged together.

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