The chipset of the motherboard almost determines all the functions of the motherboard, among which the CPU type, system bus frequency, memory type, capacity and performance, and graphics card slot specifications of the motherboard are all determined by the Northbridge chip in the chipset; The type and number of expansion slots and interfaces (such as USB2.0/ 1. 1, IEEE 1394, serial port, parallel port and VGA output interface of notebook) are determined by the south bridge of the chipset. Some chipsets also determine the display performance and audio playback performance of computer systems, because they include 3D accelerated display (integrated display chip), AC'97 sound decoding and other functions.