CPU Fan Cooler Master for Laptop Cooling

There are three types of thermal conductivity devices:

1: Pure copper (pure aluminum) heat conduction: This method has relatively low heat conduction efficiency, but its structure is simple and its price is cheap. Many original radiators use this method.

2: Thermal conductive copper pipe: It is still the most commonly used method nowadays. Its copper pipe is hollow and filled with a type of thermal conductive liquid. When the temperature rises, the liquid at the bottom of the copper pipe evaporates and absorbs heat, transferring it to the heat dissipation fins. After the temperature drops, it condenses into a liquid, which flows back to the bottom of the copper pipe. This cycle has high thermal conductivity efficiency, so most radiators nowadays use this method.

3: Water: It is commonly referred to as water cooling, divided into integrated water cooling and split water cooling. It takes away the heat from the CPU by water, and then the high-temperature water is blown away by the fan when passing through the winding cold exhaust (similar in structure to a home radiator), becoming cold water and circulating again.

二、 Factors affecting heat dissipation effect

Efficiency of heat transfer: The efficiency of heat transfer is the key to heat dissipation, and there are four factors that affect the efficiency of heat transfer.

1: The number and thickness of heat pipes: The more heat pipes there are, the better. Generally, 2 are sufficient, 4 are sufficient, and 6 or more are high-end radiators; The thicker the copper pipe, the better.

2: The process of heat transfer base: there are three types: heat pipe direct contact, copper bottom welding, and soaking plate.

3: Thermal conductive silicone grease: Due to manufacturing process issues, there cannot be a completely flat contact surface between the radiator base and the CPU (even if you look very flat, you can see uneven surfaces under a magnifying glass). Therefore, it is necessary to apply a layer of silicone grease with a higher thermal conductivity to fill these uneven areas to help with heat conduction. The thermal conductivity of silicone grease is much lower than that of copper, so just apply a thin layer evenly, If the coating is too thick, it will actually affect heat dissipation.

The thermal conductivity of general silicone grease ranges from 5 to 8, and there are also very expensive ones with thermal conductivity ranging from 10 to 15.

4: Process at the junction of heat dissipation fins and heat pipes; Heat pipes are inserted between fins to transfer heat to them, so the treatment process at their junction also affects thermal conductivity.

5: The contact area between fins and air

Fins bear the heavy responsibility of dissipating heat, and their task is to transfer the heat sent by the heat pipe to the air, so the fins must be as much as possible

When in contact with air, some manufacturers will carefully design some protrusions to increase the surface area of the sheet as much as possible

6: Air volume

The air volume represents the total volume of air that the fan can deliver per minute, usually expressed in CFM. The larger the air volume, the better the heat dissipation.

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