Reason and solution of excessive noise of CPU fan

Sometimes, when we open a large game or open a lot of programs, we will hear the ' buzz ' in the chassis, don't be surprised, this is the CPU fan working.

When the CPU temperature rises, the system will dynamically obtain the temperature of the CPU, when the temperature is too high, the fan will automatically speed up the rotation, cooling, and usually keep the lower speed, so not only to save electricity, but also to the fan life benefits.

In general, fan speed in 3000 rpm~4000rpm should be said to be normal, when the speed of 6000 or so, it will obviously appear noise.

Axis and blades are the biggest sources of noise

The quality of the fan, the center of its fan blades on the axis, operation is very smooth, noise is very small, and inferior fan, often there is a certain deviation, the center of gravity does not cause "eccentric" in the axis, such fans turn up, the equivalent of an oscillator, there will be noise.

And with the use of the longer time, the fan bearing will be more wear, make the vibration increase noise.

The simplest solution to this type of failure is to install the fan as firmly as possible, which, of course, does not solve the real problem because the fan blades are still "eccentric", and the other way is to grease the fan bearings and cushion the vibrations, thereby weakening the noise.

In addition to maintaining the CPU fan axis, pay attention to cleaning fan blades of dust, check the fan blade is damaged, because if the fan quality is not good, long time will cause the CPU fan blade deformation.

Tips for injecting oil into the CPU fan

The proposed use of oil, sewing machine oil on the shock buffering effect is very small, and fluidity, which is not effective in reducing noise, with the oil just avoid these two shortcomings.