Silicone grease is mainly used to fill the tiny void between the processor and the heatsink to conduct heat transfer between the two to improve heat dissipation and ensure the stability and performance of the computer.
Silicone grease is generally an electricless conductor, which can effectively isolate the metal contact between the processor and the heat sink, avoid the generation of electric current and electrooxidation reactions, and prevent the corrosion of metal parts. However, silicone grease is not a permanently durable material, and it can dry out, harden, or crack with factors such as time, temperature, pressure, and temperature, making it less thermally conductive and less effective at filling voids.
The need to change the silicone grease regularly is also a matter of great concern. Many people may not have changed their computer once from buying a computer to changing their silicone grease, and the computer is still used as usual.
Generally speaking, the performance of silicone grease can be maintained and the frequency of replacement is determined by the quality of the silicone grease itself, the power consumption of the CPU, the frequency of computer use, the average load used, and the heat dissipation capacity of the heatsink. Therefore, pay attention to the use of the computer, the CPU temperature and within a certain period of time, check the cooling system of the computer to determine whether the silicone grease needs to be replaced.
If the computer is in operation for a long time, the CPU temperature is also at a high temperature, if you want to replace the silicone grease, you can consider replacing it once a year or so, if the computer is used normally or low, the CPU temperature is also in the normal range, and there is no big problem if you do not change the silicone grease.
The above is how often the thermal grease needs to be replaced, and you can judge for yourself according to your own use.