#PC FAN SIZES MANUAL#
#PC FAN SIZES PC#

As the PSU temperature rises, the conductivity of its internal components decrease. The hotter the PSU's intake air is, the hotter the PSU gets.

While the power supply (PSU) contains a fan with few exceptions, it is not to be used for case ventilation. Heatsinks are especially vulnerable to being clogged up, as the insulating effect of the dust will rapidly degrade the heatsink's ability to dissipate heat. Air filters are often used over intake fans, to prevent dust from entering the case and clogging up the internal components.

Decorative fans and accessories are popular with case modders. As case fans are often the most readily visible form of cooling on a PC, decorative fans are widely available and may be lit with LEDs, made of UV-reactive plastic, and/or covered with decorative grilles. Standard axial case fans are 40, 60, 80, 92, 120, 140, 200 and 220В mm in width and length. Some ATX tower cases have one or more additional vents and mounting points in the left side panel where one or more fans may be installed to blow cool air directly onto the motherboard components and expansion cards, which are among the largest heat sources. Case fans may be placed as intake fans, drawing cooler outside air in through the front or bottom of the chassis (where it may also be drawn over the internal hard drive racks), or exhaust fans, expelling warm air through the top or rear. The components inside the case cannot dissipate heat efficiently if the surrounding air is too hot. Applications ДЇans are used to move air through the computer case. Chassis or case fans, usually one exhaust fan to expel heated air from the rear and optionally an intake fan to draw cooler air in through the front, became common with the arrival of the Pentium 4 in late 2000. Active cooling on CPUs started to appear on the Intel 80486, and by 1997 was standard on all desktop processors.

#PC FAN SIZES PC#

In the IBM PC compatible market, the computer's power supply unit (PSU) almost always uses an exhaust fan to expel warm air from the PSU.

#PC FAN SIZES MANUAL#

A user can even supplement this function with additional cooling components or connect a manual fan controller with knobs that set fans to different speeds. A computer's BIOS can control the speed of the built-in fan system for the computer. Fan control is not always an automatic process. Fans attached to components are usually used in combination with a heat sink to increase the area of heated surface in contact with the air, thereby improving the efficiency of cooling. To cool these components, fans are used to move heated air away from the components and draw cooler air over them. While in earlier personal computers it was possible to cool most components using natural convection ( passive cooling), many modern components require more effective active cooling.

Pc fan sizes