An air cooling system consists of a fan that moves air around the area you want to cool, such as the CPU or graphics card. A heat sink is installed on the hot components to dissipate heat. The heat sink transfers heat from the hot part to the area through which the air passes. System parts: Fan: The fan is an essential part of the air cooling system, as it draws in cold air and blows it onto the heat sink to cool it. Heat Sink: It usually consists of heat-conducting materials such as aluminum or copper, and increases the contact surface with the air to increase cooling efficiency