As the central component of a personal computer (PC), the motherboard serves as the hub that enables the connection and functional realization of various hardware components. When assembling a do-it-yourself (DIY) PC, in addition to paying attention to parameters such as the chipset, memory type, and network card speed, descriptions like '6/8-layer PCB' and '2oz copper' on high-end motherboards also attract considerable attention. These figures not only indicate the complexity and performance potential of the motherboard but also have a direct bearing on its stability.

PCB, or printed circuit board, is the fundamental structure of the motherboard, consisting of multiple layers of conductive copper foil. The greater the number of layers, the higher the circuit complexity, and the more stable the signal transmission. For example, a 6-layer PCB, with its sandwich design featuring dual power layers and a ground layer, achieves satisfactory power integrity within a limited number of layers, making it suitable for low- to medium-speed signal applications. In contrast, an 8-layer PCB incorporates dedicated signal layers or isolation layers to provide independent channels for high-speed signals, thereby reducing interference and is ideal for high-frequency, multi-module collaborative scenarios.

Regarding '2oz copper,' the 'oz' here denotes the industry-standard unit for measuring copper foil thickness. Specifically, 1oz copper is approximately 35 microns thick, while 2oz copper is about 70 microns. The thickness of the copper foil directly influences the circuit's impedance control, current-carrying capacity, and thermal management efficiency. Thicker copper foil reduces wire resistance, minimizes signal attenuation and delay, and enhances signal integrity. It also increases the current-carrying capacity, reduces line temperature rise, and protects sensitive components. Consequently, high-end motherboards often adopt configurations such as 6-layer PCB + 2oz copper or 8-layer PCB + 2oz copper, ensuring stable transmission of high-frequency signals while handling the high currents and thermal stresses encountered during overclocking.