Development history and application of PCIE

Infineon / Mitsubishi / Fuji / Semikron / Eupec / IXYS

Development history and application of PCIE

Posted Date: 2024-01-22

With the continuous development of technology, computer hardware is also constantly updated. In this process, PCIE (Peripheral Component Interconnect Express), as a new bus standard, gradually replaced AGP and PCI and became an indispensable part of the computer system. This article will introduce you to the development history of PCIE in detail and take you through the journey of this technology from its birth to its widespread application.

Limitations of AGP and PCI

Before the emergence of PCIE, the main bus standards commonly used in computer systems were AGP and PCI. AGP (Accelerated Graphics Port) is a bus specially designed for graphics cards. It can make data transmission between the graphics card and the CPU more efficient. However, with the continuous improvement of computer hardware performance, AGP has gradually exposed some limitations, such as insufficient bandwidth and poor scalability.

At the same time, although the PCI (Peripheral Component Interconnect) bus can connect various expansion cards, its bandwidth is also limited and cannot meet the needs of high-performance hardware. Therefore, the industry began to seek a new bus standard to solve these problems. The birth of PCIE

In 2001, Intel proposed the concept of PCIE, aiming to provide higher bandwidth, better scalability and higher reliability for computer systems. After several years of research and development, in 2004, the PCIE 1.0 specification was officially released. PCIE 1.0 adopts a new data transmission method, that is, point-to-point transmission, and each device has exclusive bandwidth, thus greatly improving data transmission efficiency.

Development of PCIE

Since the release of the PCIE 1.0 specification, PCIE technology has developed rapidly. The following are the main features of each version of PCIE:

(1) PCIE 1.0: Released in 2004, providing a bandwidth of 250MB/s.

(2) PCIE 2.0: Released in 2007, increasing the bandwidth to 500MB/s.

(3) PCIE 3.0: Released in 2010, the bandwidth was further increased to 985MB/s.

(4) PCIE 4.0: Released in 2017, the bandwidth reached 1969MB/s.

(5) PCIE 5.0: Released in 2020, the bandwidth has been further increased to 3938MB/s.

As the PCIE version continues to be upgraded, its application scope is becoming more and more extensive. In addition to traditional graphics cards, network cards, sound cards and other devices, SSDs, USB controllers, Thunderbolt interfaces and other devices have also begun to support PCIE interfaces.

Wide application of PCIE

Today, PCIE has become an indispensable part of computer systems. The following are the applications of PCIE in various fields:

(1) High-performance computing: PCIE’s high bandwidth and low latency characteristics make it an ideal choice for high-performance computing. Many high-performance computing devices, such as GPUs, FPGAs, etc., use PCIE interfaces to connect to the motherboard.

(2) Data center: In the field of data center, PCIE technology is widely used in servers, storage devices and network equipment. Through the PCIE interface, high-speed data transmission can be achieved to improve the performance and efficiency of the data center.

(3) Consumer electronics: With the development of PCIE technology, more and more consumer electronic products have begun to support PCIE interface. For example, many high-performance laptops, tablets, smartphones and other devices use PCIE interface SSDs.

As a new bus standard, PCIE has seen its development speed and application scope continue to expand since its birth. In the future, with the continuous advancement of technology, PCIE technology will continue to develop to provide higher performance and better user experience for computer systems.

Review Editor: Huang Fei

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