Why does computer needs themral grease and how to use it ?

     As the heart of computers, the heat output of CPUs is quite astonishing. Generally, CPUs transmit heat to the heat sink through thermal conductive paste to achieve heat dissipation. If the heat output of CPUs is too high, the system will malfunction, so the heat conduction of CPUs becomes particularly important.

      So, when installing a heat sink, it is best to apply thermal conductive paste between the heat sink and the CPU. The function of thermal conductive paste is not only to quickly and evenly transfer the heat generated by the CPU to the heat sink, but also to increase the thermal contact between the uneven lower surface of the heat sink and the CPU. Moreover, the thermal conductive paste has a certain degree of viscosity. In the case of slight aging and loosening of the metal elastic plates that fix the heat sink, To a certain extent, it can prevent the heat sink from separating from the surface of the CPU and maintain its heat dissipation function.

    In theory, on the premise of ensuring the filling of surface gaps between CPU/GPU and radiator, the thinner the thermal conductive paste layer, the better. After all, in terms of thermal conductivity, the thicker the thermal conductive material, the higher its thermal resistance.

     There is not yet a very standard statement on how to apply thermal conductive paste, but there is a guideline. The key to applying thermal conductive paste is to be uniform, free of bubbles, impurities, and as thin as possible. There are two main ways to apply it now. One is to squeeze a little thermal conductive paste in the center of the surface of CPU/GPU, and then use the pressure of the radiator to compress the thermal conductive paste evenly. The other is to evenly print the thermal conductive paste on the surface of CPU/GPU through steel mesh or silk screen, The first method is suitable for heat sources with smaller surface areas, while the second method is more suitable for CPUs/GPUs with larger surface areas. In contrast, the second method is more uniform and suitable.