Computer components like the CPU and GPU need to be kept working at ideal temperatures hence PC cooling fans are utilized to help drain heat from these parts. These fans function by pulling in cool air from outside the case and blowing it over the hot components to help cool them down. They are often installed on the computer case or on the components themselves. Some PC cooling fans are made to be low-profile and silent, while others are made to be stronger and more effective at cooling. PC cooling fans are generally considered to be a crucial part of any computer system as they assist in ensuring that the parts are working within their ideal temperature range and prevent overheating which can result in hardware failure and decreased performance.