PCIe - kylessukaichang/kylessukaichang.github.io GitHub Wiki

One of the key differences between the PCI Express bus and the older PCI

• the bus topology

  • PCI

    • uses a shared parallel bus architecture, in which the PCI host and all devices share a common set of address, data and control lines.

  • PCI Express

    • based on point-to-point topology, with separate serial links connecting every device to the root complex (host).