PCI Express Scaling Analysis

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PCI Express: X1, X4, X8, X16

On many dual graphics systems, two x16 PCI Express slots are powered by two slots running in x8 link mode.

This is the PCI Express connector of a graphics card with connectors taped to run at x8 PCI Express.

We had to tape many of the PCI Express contacts to force the test system into x4 PCI Express mode.

Here is an image of the same card, but with more connectors taped. This one will run x4 PCI Express.

Patrick Schmid
Patrick Schmid
Editor-in-Chief (2005-2006)

Patrick Schmid was the editor-in-chief for Tom's Hardware from 2005 to 2006. He wrote numerous articles on a wide range of hardware topics, including storage, CPUs, and system builds.