PCI Express makes the 3.0 leap, doubles bandwidth over PCIe 2.0 spec

First Bluetooth, then USB and now PCI Express. It's clearly the era of version 3.0, and given that the PCI Express specification has been humming along at 2.0 speeds for over two years now, we'd say an update was definitely due. Thankfully, the PCI-SIG has announced the availability of the PCIe Base 3.0 specification to its members today, and the highlights are certainly notable. There's a new 128b/130b encoding scheme and a data rate of 8 gigatransfers per second (GT/s), doubling the interconnect bandwidth over the PCIe 2.0 specification. And since we're sure you're fretting it, we'll go ahead and affirm that it maintains backward compatibility with previous PCIe architectures. We're also told that based on this data rate expansion, "it is possible for products designed to the PCIe 3.0 architecture to achieve bandwidth near 1 gigabyte per second (GB/s) in one direction on a single-lane (x1) configuration and scale to an aggregate approaching 32 GB/s on a sixteen-lane (x16) configuration." A lot of technobabble, sure, but one thing's for sure: your next graphics card is bound to murder your current one if paired with a PCIe 3.0 motherboard.

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PCI Express makes the 3.0 leap, doubles bandwidth over PCIe 2.0 spec originally appeared on Engadget on Fri, 19 Nov 2010 03:12:00 EDT. Please see our terms for use of feeds.

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