Presumably netizens know that the motherboard is an important part of the computer. Its quality determines the quality of the computer to a certain extent. Therefore, you should be very cautious when purchasing the motherboard. Then, how to properly purchase the motherboard What? Let's take a look at this article together! First, what is the motherboard? The composition of the motherboard? The motherboard is a multi-layer printed circuit board consisting of large-scale integrated circuits, which is the largest board in the mainframe. Its function is to provide a high-speed communication path to various computer components such as CPU, memory, hard disk, graphics card, etc., so that the various components of the computer can work in harmony and stability. The structure of the motherboard is as follows: the motherboard is mainly composed of a PCB substrate, a CPU socket, a power socket, a motherboard chipset, a BiOS chip, a memory slot, an AGP bus expansion slot, a PCI slot, an IDE interface, a motherboard jumper, a SATA interface, and A variety of peripheral interfaces and other components. Second, how to choose a computer motherboard? Because almost all accessories must be connected to the motherboard to work properly, the motherboard is the basis for a stable operation of a computer. Therefore, the purchase of a quality-qualified motherboard plays a vital role in the future operation of the computer. Since it is judged whether the quality of the motherboard is qualified or not, it involves too much professional knowledge such as circuit design, so it is inevitable that there is no feeling of starting from the start. Xiaobian will introduce a few simple and practical motherboard purchasing techniques for you. One of the choices of computer motherboards: Looking at insurance mainly refers to whether there is a sufficient amount of insurance near the I/O interface of the motherboard. The role of insurance is to improperly hot-plug external devices such as keyboards, mice, monitors, etc. or sudden increase in external current, such as lightning strikes, can automatically fuse to protect the motherboard. And if not, it is easy to cause the motherboard to burn. From the appearance point of view, the common insurance on the motherboard is green or gray flat, similar to the chip capacitor. In general, a qualified motherboard will have such insurance near the keyboard, mouse, and USB interface. The high-end motherboard will also have such insurance near the SATA hard drive interface. Of course, some motherboards have reduced the amount of insurance used to reduce production costs, leaving a significant gap in the motherboard. The security risks caused by the use of such a motherboard are obvious. If we choose one or two such insurances near the I/O interface when selecting the motherboard, for such a motherboard, from a security point of view, it is better to stay away from it. . The second choice of computer motherboard: look at the power supply A motherboard can work stably, power supply is the most important factor. How to judge the CPU power supply of the motherboard is not very complicated. In general, single-phase power is composed of an inductor, two capacitors, and several FETs. Of course, some motherboards will increase the number of capacitors in single-phase power supply, but the judgment method is basically the same, that is, the number of coils, the motherboard has several coils that are several phases of power supply. As far as materials are concerned, almost all motherboards currently use fully enclosed inductors and solid capacitors in the CPU power supply. For the average consumer, the difference in the daily use of different brands or models of these materials is not obvious. One more thing to note is that there are several FETs in a phase supply. From the appearance, the FET is the patch in the CPU power supply. The greater the number of FETs in a single-phase supply, the smaller the current shared by each FET, and the more stable the power supply to the CPU. In general, a good motherboard, the CPU should have at least three FETs in each phase of the power supply circuit. Tips: When the computer is running for a period of time, you can use a thermometer to measure the temperature of the FET. If it exceeds 75 °C, it means that the number of FETs is insufficient. The current caused by a single FET is too high, resulting in a high heat. . At this time, we need to add heat sinks to the FET or even install a fan to help dissipate heat. At present, some motherboards have streamlined the power supply of these two phases, leaving only the one responsible for 1.8V, while the 3.3V one directly relies on the power output. The power supply output voltage is obviously inferior in stability. Such a motherboard has less stability (such as four) or overclocking, and the stability is not as good as that of a two-phase power supply. The third choice of computer motherboard: see the details For a good motherboard, it is also very important to use it, and this depends mainly on the details of the motherboard. First, look at the location of the power outlet. In general, the power sockets of the motherboard are mostly at the edge of the memory slot. The biggest benefit of this design is that the user can easily organize the power cord. Some motherboards design the power supply slot near the I/O interface of the motherboard, so that the power cable of the motherboard must be plugged in above the CPU heatsink. Not only is it inconvenient, but also a thick power cord will affect the formation of the air duct inside the chassis, which will affect the overall heat dissipation inside the chassis. Second, it depends on the location of the graphics card slot and the reserved space. The main reason for this is that the current mainstream graphics card heatsinks are getting bigger and bigger, and the dual-slot heatsinks are almost standard. In this case, if the graphics card slot is next to the PCI slot, then the PCI slot cannot be used. The space behind the well-designed motherboard graphics card slot will be large, and most of the PCI-E1× slots will be designed under the graphics card slot, and the other components will not be affected by the excessive graphics card. In addition, some motherboards support two separate graphics cards working at the same time, and the space between the two graphics card slots is too small, which is not conducive to the heat dissipation of the graphics card. Xiao Bian in this article mainly from the power supply, insurance, details of the three aspects of the choice of (purchase) the correct method of the motherboard, I hope to help everyone.