PCI-X

PCI-X, short for Peripheral Component Interconnect eXtended, is a computer bus and expansion card standard that enhances the 32-bit PCI local bus for higher bandwidth demanded mostly by servers and workstations. It uses a modified protocol to support higher clock speeds (up to 133 MHz), but is otherwise similar in electrical implementation. PCI-X 2.0 added speeds up to 533 MHz, with a reduction in electrical signal levels.

Key facts

Computer Hardware Bus.name: PCI-X
Computer Hardware Bus.fullname: PCI Local Bus
Computer Hardware Bus.image: File:ZRAID at PCI-X at FSC Primtrgy TX200 S2.JPG
Computer Hardware Bus.caption: PCI-X motherboard, with one card installed.
Computer Hardware Bus.invent name: IBM, HP, and Compaq
Computer Hardware Bus.super date: ratified 2003, superseded before 2005
Computer Hardware Bus.super name: PCI Express
Computer Hardware Bus.width: 64
Computer Hardware Bus.speed: Half-duplex 266–4266 MB/s
Computer Hardware Bus.hotplug: Optional
Computer Hardware Bus.style: p