How to improve the noise characteristics of the system unit of a personal computer
When using a home personal computer to watch movies, listen to music or browse the Internet, especially at night, the noise of the system unit becomes especially noticeable. Permanent noise sources are active elements of cooling systems (ventilation) and hard disk drives.
Usually, several fans are installed in the system unit: on the processor heatsink, on the video card (if there is an active cooling system), for blowing the hard drive, for housing ventilation, in the power supply.
The most energy-intensive components of a personal computer are the central processor and video card. Accordingly, they have the most powerful cooling systems, which are the main sources of noise. On the other hand, since all modern processors, including graphic ones, are equipped with energy-saving functions, the heat dissipated by them under low loads is small. In this case, the fan or turbine of the cooling systems installed on them practically does not make noise, so the speed of these devices is determined precisely by the temperature regime. The same applies to the power supply – the operation of its fan is usually heard only with a significant level of power consumption of components installed in the system unit.
To reduce the overall noise background, all other fans, if necessary, can be replaced with slower ones, with a speed of up to 1000 rpm. If your motherboard supports the voltage regulation function of the fans, they must be powered from the corresponding connectors. Many manufacturers complete their models with special shock absorbers that dampen the vibration of a working fan to the chassis. If necessary, they can also be purchased separately.
One of the most difficult to eliminate sources of noise is the hard drive. As you know, the hard drive is equipped with a spindle rotation drive and a magnetic head block drive. In this case, the spindle speed is constant. With the correct installation of the drive in a high-quality case, the noise of the disk rotation is almost imperceptible, with the exception of the launch moments. But the sounds that occur when moving the magnetic heads, especially during intensive search operations, some hard drive models can be quite loud.
Fortunately, almost all hard drive manufacturers equip their devices with Advanced Acoustic Management, or AAM for short. Its essence lies in the fact that by changing the electrical parameters of the drive control it is possible to reduce the acceleration when moving the block of magnetic heads of the drive. This entails a reduction in noise levels. This operation is not recommended for system disks, since this increases the access time of the hard drive, which may slightly slow down its performance.
Almost all utilities for working with hard drives allow you to control the noise level. On Windows, this can be done using the free 15-day version of HD Tune Pro. This utility will allow you not only to change the value of AAM, but also to comprehensively evaluate how and how much the speed of your hard drive has changed while performing typical operations.
If this method did not work out significantly to improve the noise characteristics of the installed hard drive or if it is unacceptable for some reason, you need to purchase a special box for the hard drive, for example, the HC01-TC model from Arctic Cooling. The drive is placed in this device on vibration-damping racks, cooling is carried out using a small fan, the speed of which is automatically adjusted depending on the temperature inside the box.
These methods can reduce the noise of the system unit of a home computer in low-load modes to a comfortable level.
As a result, if your computer is very noisy, then perhaps you need to check the temperature of all components and, if necessary, clean the cooling system or replace the thermal paste with hot elements.