Bearings
Can be found in most objects are equipped with a rotating shaft. Duty to minimize the friction between the shaft and the axis of rotation. At the fan, reducing friction in the dynamo of the fan. There are various methods of bearing, such as sliding bearings (bushings), brearings sleeve, ball bearings, fluid / gas bearings, and magnetic bearings.
Fin
Strip on the heatsink, which is intended for junior fashion to accelerate the process of heat release. In theory, the more thin and the more the number of fin, will accelerate the process of heat releasing. Aside from the fan factor is used.
Heatpipe
Allows the transfer of heat through a sealed tube/pipe. Usually, in the pipeline is also equipped with liquid things, which makes it more optimal in the rate of cooling down the machine. This mechanism is efficient for the PC, moreover due to this mechanism allows suppress the noise level of fan rotation. More heatpipe solution is found, as well as on cooling device for the processor/CPU or even for VGA.
Heatsink
It is an object which is attached to the component, with the function releasing heat generated components through conduction, convection, and radiation. On the PC component, usually the material used to be is copper or aluminum heatsink. Why aluminum? Because light and cheap. Then why copper? Because it can release heat faster.
Sone
An unit of noise level. Different with dB(A)/dBA (decibels adjusted), it is calculated based on absolute noise level, using reference of SPL 20 micropascal = 0 dBA to produce a logarithmic scale. Meanwhile, sone is the noise level is measured subjectively, by comparing the sound source with the value of a certain SPL. Sone scale is a linear scale, and it is easy understood by some people.
Thermal Resistance
Ability delivers heat flow from heatsink material in the unit of time, based on temperature difference between heatsink material and the ambient of temperature around it. In an international scale, the unit is expressed in K-m2 / W (Kelvin square meter per watt).
