Peripheral Component Interconnect (PCI)

PCI Bus Architecture

• Peripheral Component Interconnect (PCI) bus is a local bus standard used to connect hardware components to a computer's motherboard.

PCI Definition

• PCI stands for Peripheral Component Interconnect in the context of computer hardware.

PCI Bus Performance

• Two main factors that influence PCI bus performance are clock speed and bus width.
• The PCI architecture can operate at a clock speed range of 25-33 MHz or 50-66 MHz.

Bus Width and Performance

• Bus width is directly related to PCI bus performance, with a wider bus width allowing for more data transfer.

Systems That Use PCI Architecture

• High-end servers and workstations use PCI architecture for high-speed I/O subsystems.

PCI vs PCIe

• The main difference between the previous PCI card and the successor PCIe card is that PCIe uses a point-to-point connection, whereas PCI uses a shared bus architecture.

PCI-X Bus Technology

• PCI-X bus technology has doubled the clock speed to 133 MHz, allowing transfer speeds up to 1 GB/sec.

PCI Express (PCIe) Purpose

• The main purpose of PCI Express (PCIe) is to provide a high-bandwidth, low-latency, and scalable I/O connection.

PCI and PCI-X Comparison

• A true statement about PCI and PCI-X is that PCI-X is a higher-speed extension of the PCI bus.

PCI-X Slot Width

• The width of a PCI-X slot is 164 pins.

Mandatory Features of PCI-X

• The feature of PCI-X that was made mandatory compared to PCI is the 64-bit data transfer.

Increasing Clock Speed or Bus Width

• Increasing clock speed or bus width allows you to increase the data transfer rate.

Classic PCI Standard

• The PCI card follows the original PCI standard with a classic shared bus architecture.

PCIe Requirement

• The main requirement of PCIe to support higher data rate I/O devices is a point-to-point connection.

PCIe Technology

• PCIe adopts a serial point-to-point connection technology.