Because the design of notebook first consider portable, so the volume should be small. The lighter and thinner the notebook, the more popular it is. Take a look at all kinds of ultrabooks and macbooks on the market at present. All of them are slim. So the overall volume is small, leaving room for heat dissipation. It is conceivable that some users with strong hands-on ability have opened the back cover of the notebook and found that most of them are like the following.
It can be seen from the figure that the CPU and GPU are connected to the fan through the heat conducting pipe, so as to achieve the purpose of heat dissipation. Then how does its cooling system work? First, the CPU and GPU are connected by thermal fluid, and then reach the fan for heat dissipation. Heat conducting fluid or silicone grease is used in the heat conducting pipe. The main principle is that some easy to evaporate liquid is sealed in the pipe, so there are two states of liquid and steam in the pipe. At the hot end, the liquid evaporates and absorbs heat. These gases diffuse to the cold end, condense and release heat. The condensed liquid returns to the hot end by gravity or capillary action to continue working, so as to achieve the purpose of heat dissipation.
In addition to thermal design protection, the CPU and GPU chips used in notebook are generally low-power mobile chips, so the overall performance is lower than that of desktop computers with the same configuration. The notebook's own characteristics determine the short board of heat dissipation, so there are many ways to improve the heat dissipation, such as adding a cooling base, which basically supports the notebook to a certain height and increases the air inlet volume inside the notebook. However, the improvement of the cooling effect is relatively limited, and the fan built in the cooling base will also bring noise
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