PCI Express 3.0 is a high-speed interface standard used to connect various hardware components in computers, such as graphics cards and storage devices. It offers a maximum data transfer rate of 8 gigatransfers per second (GT/s) per lane, effectively doubling the speed of its predecessor, PCI Express 2.0. This improvement allows for faster communication between the CPU and connected devices, enhancing overall system performance. The architecture of PCI Express 3.0 supports up to 32 lanes, enabling a total bandwidth of up to 32 gigabytes per second (GB/s) in each direction. This makes it suitable for demanding applications like gaming, video editing, and data-intensive tasks, ensuring that users experience smooth and efficient operation.