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PCI Express (Peripheral Component Interconnect Express), officially abbreviated as PCIe or PCI-E, [2] is a high-speed serial computer expansion bus standard, meant to replace the older PCI, PCI-X and AGP bus standards.
Peripheral Component Interconnect (PCI) [3] is a local computer bus for attaching hardware devices in a computer and is part of the PCI Local Bus standard. The PCI bus supports the functions found on a processor bus but in a standardized format that is independent of any given processor's native bus.
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The PCI-X standard was developed jointly by IBM, HP, and Compaq and submitted for approval in 1998. It was an effort to codify proprietary server extensions to the PCI local bus to address several shortcomings in PCI, and increase performance of high bandwidth devices, such as Gigabit Ethernet, Fibre Channel, and Ultra3 SCSI cards, and allow processors to be interconnected in clusters.
NVMe over M.2 or U.2 (using PCI Express 3.0 ×4 link) [n] 32 Gbit/s: ... Some other computer architectures use different modules with a different bus width.
PCI Express: 2004 [10] card edge: 250 MByte/s: P2P highspeed PCI. VPX: 2004 [11] MultiGig RT2 [12]? Provides VMEbus-based systems with support for switched fabrics. Designed specifically with defense applications in mind. Working group is OpenVPX. VPX computer bus standard - V -VME and P -PCI and X the extents for both buses standards. VXI ...
Four PCI Express bus card slots (from top to second from bottom: ×4, ×16, ×1 and ×16), compared to a 32-bit conventional PCI bus card slot (very bottom). In computer architecture, a bus (historically also called a data highway [1] or databus) is a communication system that transfers data between components inside a computer or between computers. [2]
The connectors and the electrical rules allow for eight boards in a PCI segment. Multiple bus segments are allowed with bridges. [2] Unlike the original Eurocard solutions such as VME, which use connectors with a 0.1 inch (2.54 mm) pin spacing, CompactPCI cards use metric connectors with a 2-millimeter pin spacing, designed to the IEC 1076 ...