Peripheral Component Interconnect eXtended
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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- ratified 2003, superseded before 2005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
via Wikipedia infobox
Wikidata facts
- Image
- ZRAID at PCI-X at FSC Primtrgy TX200 S2.JPG
Show 2 more facts
- inception
- 1998-00-00
- Commons category
- PCI-X
Sources (1)
via Wikidata · CC0
~16 min read
Article
12 sectionsContents
- History
- Background and motivation
- PCI-X 1.0
- PCI-X 2.0
- Technical description
- Versions
- Mixing of 32-bit and 64-bit PCI cards in different width slots
- Comparison with PCI-Express
- See also
- References
- Further reading
- External links
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.
The slot is physically a 3.3 V PCI slot, with the same size, location and pin assignments. The electrical specifications are compatible, but stricter. However, while most conventional PCI slots are the 85 mm long 32-bit version, most PCI-X devices use the 130 mm long 64-bit slot, to the point that 64-bit PCI connectors and PCI-X support are seen as synonymous.