Chipset is the core component of the motherboard, which is usually divided into north bridge chip and south bridge chip according to the arrangement position on the motherboard. The north bridge chip provides support for CPU type and main frequency, memory type and maximum capacity, ISA/PCI/AGP slot, ECC error correction, etc. The south bridge chip provides support for KBC (keyboard controller), RTC (real-time clock controller), USB (universal serial bus), Ultra DMA/33 (66) EIDE data transfer mode and ACPI (advanced power management). The north bridge chip plays a leading role, also known as the Host Bridge. The identification of the chipset is also very easy. Take the Intel 440BX chipset as an example. Its north bridge chip is the Intel 82443BX chip, which is usually located near the CPU slot on the motherboard. Because of the high heat of the chip, a heat sink is installed on this chip. The south bridge chip is located near the ISA and PCI slots, and the name of the chip is Intel 82371EB. The rest of the chipsets are arranged in essentially the same position. For different chipsets, there is also a difference in performance.