PCI和PCI Express之间的区别

1.外围组件互连(PCI)：
PCI是用于连接计算机系统中的硬件设备的计算机总线。常规PCI是PCI的另一个名称。 PCI被设计为并行总线，并具有分配时间量的单个总线时钟。 PCI是由Intel在1992年推出的。 PCI总线的标准宽度为32位或64位。热插拔是PCI中的可选功能。

2.外围组件互连Express(PCI-e)：
PCI-e是2003年推出的外围组件互连的替代版本。尽管PCI中的热插拔功能是可选的，但新版本中却具有热插拔功能。 PCI Express是连接图形卡，Wifi，硬盘驱动器和其他硬件设备的串行总线。它比PCI更快，输入和输出引脚数更少，因此比PCI更好。

PCI和PCI Express之间的区别：

S.NO	PCI	PCI express
1.	PCI is a computer bus that connects hardware devices.	An advanced version of PCI bus that connects graphic ports, Wifi and other devices.
2.	It was introduced in the year 1992 by Intel.	It was introduced in the year 2003 by Intel, Dell and other organizations.
3.	It is a parallel bus interface	It is a serial bus interface.
4.	Conventional PCI is the other name for PCI.	PCI-e is the abbreviated name for PCI Express.
5.	It works slower.	It works faster.
6.	PCI provides a slower data rate	PCI Express provides faster data rate.
7.	The PCI slots are standardized	The PCI-e slots depends upon number of lanes.
8.	The speed of a PCI slot is upto 133MB/s.	The speed of a PCI-e slot is upto 16 GB/s.
9.	It has less features.	It has more features.
10.	It may or may not have hot swapping feature.	It has the hot swapping feature.