The noise level of fans is generally expressed in decibels (db) or sones. However, a high volume may also be due to the fact that the bearings of the fan run poorly and cause vibrations, which causes additional operating noise.īoth factors, high speed and poor bearings, reinforce each other and increase the noise level. An unpleasant noise volume is usually the consequence of a high fan speed, which is indicated in round per minute (RPM). ![]() Loud fans can be quickly perceived as annoying. In addition to special coolers for the CPU and GPU PC case fans help optimize the airflow in the Computer and thus improve the temperature within the PC. Without adequate cooling, the processors overheat, which in the worst case can lead to damaged parts despite protective functions such as an automatic thermal switch-off. Case fans are used to dissipate the heat coming from the PC components during operation and to ensure a long-term service life of CPU, GPU and other parts.
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