PCI : Computer Hardware Buyers’ Glossary
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PCI
Peripheral Component Interconnect. The way the various cards talk to the CPU on the motherboard. Most PCI cards are 32 bit. Some high performance SCSI cards are 64 bit, and need special large PCI slots. Multiport Ethernet cards can be 64 bit. For more information on 64 bit PCI see American Megatrends.

PCI-X is a variant of PCI that runs twice as fast.

PCIe is a Intel variant of PCI that is at least twice as fast but which uses incompatible connectors with 2, 4, 8, 12, 16, or 32 lanes. 8 Lanes is comparable to AGP.

AGP
bus
motherboard
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