Compared to traditional PCI, which uses parallel communication, PCIe's architecture is essentially different because it uses a serial communication protocol. Due to the ability to free slots downloadtransmit data concurrently across multiple lanes, this shift results in increased efficiency and decreased latency. Another significant benefit of PCIe is its scalability, which allows users to select from a variety of configurations according to their requirements, such as one x1 slot for basic peripherals or multiple x16 slots for high-end graphics cards.