PCI Express

From IeXwiki

PCI Express (PCIe) is the latest interface for peripheral components, mostly for graphics cards; at the present time there aren't any other mass market components that use this bus except RAID cards. On paper, PCIe X16 offers almost twice as much bandwidth per stream as does AGP 8X. However, in practice, this advantage is not yet fully exploited in graphics cards available today.

As a serial bus, PCI Express should not be confused with PCI-X or plain vanilla PCI. These latter types use parallel signaling.