Peripheral Component Interconnect Express (PCIe, PCI-E)
SearchDataCenter, Tuesday, April 2nd, 2024
Peripheral Component Interconnect Express (PCIe or PCI-E) is a serial expansion bus standard for connecting a computer to one or more peripheral devices.
PCIe provides lower latency and higher data transfer rates than parallel buses, such as PCI and PCI eXtended. Every device that's connected to a motherboard with a PCIe link has its own dedicated point-to-point connection. This means that expansion card devices aren't competing for bandwidth because they aren't sharing the same bus.
How does PCIe work?
Essentially, PCIe is a data transfer bus. The purpose of any bus is to offer a standardized physical structure -- the slot and electrical contacts -- and the underlying protocols that enable the exchange of data between computer devices.