What is pci expres?

PCI Express (Peripheral Component Interconnect Express), commonly abbreviated as PCIe, is a high-speed interface standard for connecting computer components, such as graphics cards and solid-state drives, to the motherboard. It was introduced in 2004 as a replacement for the older PCI and AGP standards, offering faster data transfer speeds, lower latency, and more bandwidth.

PCIe uses a serial interface, allowing for faster data transfer rates and lower electrical noise than older parallel interfaces. It also features multiple lanes, with each lane capable of transmitting data at speeds of up to 16 Gbps. The number of lanes available on a PCIe slot determines its throughput: a x1 slot has one lane and can transmit up to 16 Gbps, while a x16 slot has sixteen lanes and can transmit up to 256 Gbps.

PCIe is backward compatible with older PCI and AGP standards, allowing for older devices to be connected using adapters. Additionally, PCIe devices can be hot-plugged, meaning they can be inserted or removed from the system without shutting down the computer.

Overall, PCI Express is a versatile and high-performance interface standard for connecting computer components, offering fast data transfer speeds, low latency, and backward compatibility with older standards.