The influence of PCI Express

PCI Express  is a high-speed serial connection that operates a lot more like a network than the usual bus. Learn how PCI Express can speed up a computer and replace the AGP.

Peripheral Component Interconnect (PCI) slots are such a fundamental element of a pc's buildings that most people take them for granted. For years, PCI has been a versatile, functional way to connect sound, video and network cards to a motherboard.

But PCI has some disadvantages. As processors, video cards, sound cards and networks have gotten faster and more powerful, PCI has stayed the same. It has a fixed width of 32 bits and can handle only 5 devices at a time. The newer, 64-bit PCI-X bus provides more bandwidth, but its greater width compounds some of PCI's other issues.

A new PCIe eliminates each of these disadvantages, provides more bandwidth and is best with existing os's.
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