Generally, a notebook computer has two fans, a CPU fan and a graphics card fan. When using the computer normally, the fan will make a "whirring" sound, but if the laptop is placed in an unstable or uneven position, the fan will not be in a relatively flat position, and there will be a "buzzing" sound during operation. In this case, you can turn off the computer first, then turn it over and turn it on again, and the sound disappears.
Some laptops have adjustable fan speed and long service life. In case of severe wear, if the standard or pressurization mode is turned on, there will be a "buzzing" sound. Take the "ASUS Flight Fortress 6" notebook computer as an example, you can press the "Fn+F5" key to switch the fan speed, and the buzz will disappear.
Performance of computer fan
Angle and orientation system. Generally speaking, the rotating speed of the fan is indicated in the instruction manual of the radiator. Generally speaking, 30% heat dissipation effect of radiator depends on fan speed, but the higher the fan speed, the better.
The correct fan speed should be determined according to the calorific value of CPU, and the selection of fan speed of different specifications should be different. The basic principle is: under the premise of generating the same air volume, the larger the fan, the lower the rotation speed and the lower the noise. Generally, the rotation speed between 3500 and 5200 rpm is more conventional.
The greater the power, the stronger the fan wind power and the better the heat dissipation effect. The power of the fan is directly related to the speed of the fan, that is, the higher the speed of the fan, the stronger the fan will be. Generally, the fans sold in the computer market are DC 12V, and the power is from 0. X W to 2. X W, so the power needs to be selected according to the calorific value of your CPU.
Special reminder, you can't emphasize high power unilaterally, just match the power of CPU itself. Excessive power will not greatly enhance the heat dissipation effect, but may increase the workload of the computer and eventually shorten the life of CPU and fan. Therefore, when choosing CPU power, it is necessary to be "hot". In addition, the front opening of the fan should always be kept clean to avoid blockage.
A good radiator has no burr at the edge, no deformation of the radiator, smooth bottom and no crack, neat appearance, generous shape, warranty, anti-counterfeiting mark or other trademarks. In addition, when choosing the radiator, we should also pay attention to the bottom of the radiator not to be too thick, because the thermal conductivity of aluminum is not very good, and too thick will affect heat transfer.
In addition, the guide grooves on the surface of the radiator should be dense, which can ensure that the radiator can have a larger contact area with the air, thus enhancing the heat dissipation effect. General computer enthusiasts will reprint the water-cooled fan to the CPU when the economy allows, and achieve the effect of rapid cooling through the circulation of liquid.