The blades of electronic cooling fans have not been noticed by many friends. Carefully count your fan blades to see if they are odd or even. In the past, even-numbered blades are often present in electronic cooling fans, and the blades are opposed to each other. This kind of fan has been used for a long time. For example, the blades are worn or accumulated too much dust, and the center of gravity is easily shifted. As a result, the electronic cooling fan will suffer from increased noise and poor rotation.
Current electronic cooling fans basically use odd-numbered blades, and their center of gravity is determined by all blades at the same time. Even if individual blades are worn or dusted, the deviation of the center of gravity will be relatively small, and of course the noise will be much smaller. Therefore, it is recommended that when buying an electronic cooling fan, you might as well count the number of blades first, and try to choose a fan with an odd number of blades.
At the same time, the shape of electronic cooling fan blades is also very particular. Generally speaking, high-speed fans should choose curved and sweeping blades because they are more suitable for high-speed rotation and have lower noise. Straight fan blades are more suitable for low-speed fans, and their blowing covers a large area, which is especially suitable for use on the top of the case, notebook stand, etc.
There are two kinds of bearings for cooling fan accessories, one is ball bearing, the other is oil bearing, and the ball bearing has single ball and double ball, its advantage is longer service life and stability. While oil-impregnated bearings are quieter, but due to the influence of the environment, not all products are suitable for oil-impregnated bearings. Everyone can follow up on their own machine selection when purchasing.
Electronic cooling fans are available in box models with frontal air outlets, blowers with side air outlets, and disc models with full air outlets. Follow your machine requirements from the motor cooling fan supplier and choose the right air outlet.
The use of multiple fans in the processor and graphics card radiator is a development trend, but many small partners probably did not expect that if used improperly, multiple fans may not greatly improve the heat dissipation capacity, but may cause particularly obvious problems such as vibration and noise. On some multi-fan graphics cards, we can see electronic cooling fans with reverse rotation or different sizes. They can avoid resonance problems and reduce vibration and noise.
The current PC fan only has two power interfaces, which are designed with 3-pin and 4-pin, respectively. The extra pins of the 4-pin interface are mainly used to transmit some control signals, such as judging whether an electronic cooling fan is installed on this interface to transmit the fan speed information and control signals. The independent detection and control capabilities of the 4-pin interface fan are more accurate and safer than the 3-pin interface. Therefore, if the price is not much different, it is recommended that you choose the 4-pin interface electronic cooling fan product.