Computer fans prevent overheating of computer components. They draw in cooler air, eliminate hot air, and move air through a heat sink. Fans come in different sizes and are vital for the CPU and graphics card. They vary in airflow and rotational speed, with higher speed generating more noise.
Computer fans are located inside the computer case and help prevent the various computer parts inside from overheating. Without them, computer components can malfunction, become damaged, or even crash.
A computer fan can do one of three things. First, it can draw in cooler air from outside and inside the computer case; that is, he can shoot in the air. Secondly, he can eliminate the hot air inside the computer; that is, push the air out. Finally, he can move air through a heat sink to cool another part of the computer, such as the central processing unit (CPU). A heat sink is a component that absorbs and dissipates heat. In this setup, you can think of the computer fan and heat sink as a tandem working together.
A computer fan commonly comes in a square frame, although round ones are also available. The normal sizes are 60, 80, 92 and 120 millimeters (about 2.36, 3.15, 3.60, 4.70 inches). The size, of course, depends on where the fan will be placed. The computer case or computer chassis is where fans are usually mounted. They can be installed behind, in front, on the sides or even on top of the computer case.
The CPU is a component that needs a computer fan to work well. The CPU is the most important chip in the computer; in fact, it is often called a brain. Thus, CPU fans are very vital to a computer’s well-being.
Computer fans are also used to cool chipsets, which are specialized chip sets on a computer’s motherboard. Another common application is a graphics card. With the advent of high-powered games and 3D graphics, graphics cards generate a lot of heat, and graphics card fans keep them cool.
Fans are less commonly used on hard drives and power supplies. The hard drive is where all of your files are stored on your computer, and hard drive fans help prevent it from crashing. On the other hand, if a power supply gets hot, the computer doesn’t get power, so the power supply fans can also be important.
Computer fans also vary in the amount of airflow and rotational speed. The amount of airflow is measured in cubic feet per minute (CFM) while the rotational speed is measured in revolutions per minute (RPM). A higher speed usually means more noise generated by the computer fan.
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