Is liquid cooling better than air cooling?

- Mar 07, 2019-

Is liquid cooling better than air cooling?


Air cooling

Due to the low cost of implementation, the use of fans for air cooling is the most common cooling technology in our lives. Since this method is relatively simple to manufacture, it is only necessary to use a fan to remove the heat absorbed by the heat sink. And now the price of the purchase is relatively low, the installation is simple and so on. A high-volume fan + heat-dissipating heat sink can form a good-performance CPU air-cooled heat sink, which is the most common method.

The basic structure of a conventional air-cooled heat sink is divided into four parts: a fan, a clip, a heat sink (fin fin), and a heat sink (floor portion). Among them, the technology of the heat sink is the most important, and it involves materials, processes, structures, etc., and it is also the part we want to focus on. The performance of the fan can not be ignored, including the air volume, wind pressure, noise, and service life. Finally, we also analyze the type of buckle.


Water cooling

System composition

The water cooling system generally consists of the following parts: heat exchanger, circulation system, water tank, water pump and water, and the heat dissipation structure can be added as needed. Because of its physical properties, water is not as good as metal (fan cooling through metal heat conduction), but the flowing water will have excellent thermal conductivity, that is, the heat dissipation performance of the water-cooled radiator and the heat-dissipating liquid therein ( The flow rate of water or other liquid is proportional, and the flow rate of the refrigerant is related to the pump power of the refrigeration system. Moreover, the heat capacity of the water is large, which makes the water-cooled refrigeration system have a good heat load capacity, which is equivalent to 5 times that of the air-cooled system. The direct benefit is that the CPU operating temperature curve is very flat. For example, a system using an air-cooled heat sink will have a hot temperature spike in a short period of time when running a program with a large CPU load, or it may exceed the CPU alert temperature, while a water-cooled heat sink system has a relatively large heat capacity and a relatively small thermal fluctuation.