Fan blades are odd or even？

The blades of the cooling fan probably have not paid special attention to them. Please count your fan blades carefully to see if they are odd or even. In the past, even-numbered blade designs are often seen in radiator fans, with the blades facing each other. This kind of fan has been used for a long time. For example, if the blades are worn or accumulated too much dust, the center of gravity is easily shifted. As a result, the fan will suffer from increased fan noise and poor rotation.

The recent fans basically use an odd number of blades, and the center of gravity is determined by all the blades at the same time. Even if the individual blades are worn or dusted, the deviation of the center of gravity is relatively small, and of course the noise is much smaller. Therefore, the cooling fan manufacturers ---- Ruiapple recommend when you buy a radiator, may wish to count the number of leaves, try to choose the odd blade products.

At the same time, the shape of the fan's blades is also very particular, so friends can pay attention to it. 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 coverage area is larger, especially suitable for use on the top of the case, notebook holders, etc.

Straight blades are generally used for low-speed large-diameter fans. Note that this fan also uses even-numbered blades that are easier to design and manufacture.

More fans = more money！

The use of multiple fans in processors and graphics card radiators is a development trend, but many small partners probably did not expect that if they are used improperly, multiple fans will not necessarily greatly increase the heat dissipation capacity, but may cause particularly obvious vibration and noise problems. On some multi-fan graphics cards, we can see fan configurations with reverse rotation or different sizes, which can avoid resonance problems and reduce vibration and noise.

Is the vertical radiator good?

Now there are some CPU radiators that use vertical heat sinks and need to install their own fans. The cooling fan manufacturer --- Ruiapple recommends that you also use the installation method of rotation in different directions when installing, which can also avoid resonance problems and reduce vibration With noise. In addition, the fan facing the memory side should choose the suction method, which can suck away the dust near the memory as much as possible and reduce the poor contact caused by the accumulation of dust here.

3-pin or 4-pin, this is not a problem！

The current PC fan mainly has two power interfaces, which are designed with 3-pin and 4-pin. The extra pins of the 4-pin interface are mainly used to transmit some control signals, such as judging whether a fan is installed on this interface, transmitting fan speed information and Control signals, etc. The independent detection and control capability of the 4-pin interface fan is more accurate and safer than that of the 3-pin interface. Therefore, it is recommended that you choose a 4-pin fan product if the price is not much different.