What is a CPU Fan?

A Central Processing Unit (CPU) is the main microchip in a computer, while a CPU fan is the dedicated fan that helps keep the processor cool. Processors generate heat from internal electrical energy. The more demand placed on a CPU, the harder it works, and the warmer it gets. If the CPU gets too warm it can make errors and eventually ‘melt’ becoming completely inoperable. A CPU fan works in conjunction with a heat sink to prevent this.

A heat sink is a metallic device that sits directly on the CPU, drawing heat away from the chip into its cooler, aluminum, fin-like structure. The CPU fan attaches to the heat sink, pulling air through the fins. By dissipating heat drawn into the heat sink, the CPU fan indirectly cools the processor.

A CPU fan can come in a variety of sizes and is normally sold with a copper and/or aluminum heat sink. Specifications include diameter and whether the CPU fan uses ball bearings, thought to be quieter than non-bearing fans. The CPU fan and heat sink will also indicate which processors it is compatible with, or rated to cool.

Processors that are sold with a heat sink and CPU fan normally carry a 5-year warranty, while those sold without commonly (but not always) carry a warranty of one year. While the processors might be identical, manufacturers know that inadequate cooling can drastically shorten the life of a CPU. In the case of a CPU sold without a heat sink and CPU fan, the manufacturer has no guarantee that a customer will provide proper cooling.

Overclockers are computer enthusiasts that “push” CPUs, making them work faster than their marketed specifications. This causes the chips to run hotter than normal. Many overclockers prefer to provide their own advanced, aftermarket heat sinks and fans to protect overclocked CPUs. These heat sinks are normally taller than average, and the CPU fans are often more powerful while being quieter, adding less noise to the system than many commercial fans.

If you would like to purchase a CPU fan and heat sink, measure the available space inside your computer case before shopping, particularly if you plan to buy online. Advanced heat sink designs are often very tall, and not all computer cases can accommodate all models. Customer reviews, available at many online retailers, can give you a good idea of which CPUfans and heat sinks are most popular.

Computer parts drop noise of the CPU fan

Core tip: many friends are reaction own computer too much noise noise. Actually the biggest culprit is CPU fan. Generally speaking, the new buy fan always noise is small, and the use of a period of time will be significantly bigger. In fact, the dust caused by fan noise is one of the important reasons cpu fan for rising, because all-pervasive dust can always

A lot of friends reaction own computer too much noise noise. Actually the biggest culprit is CPU fan. Generally speaking, the new buy fan always noise is small, and the use of a period of time will be significantly bigger. In fact, the dust caused by fan noise is one of the important reasons for rising, because all-pervasive dust can always drilling incomplete airtight case. When the CPU fan high speed rotates, the whirlpool effect makes the dust is easy to adhere to the fan on. There is no doubt that at this time will CPU fan tear open come down to clean a is very necessary, and in the dust out, we should pay attention to fan back and fin of crack, here is the most easily forgotten.

Fan back and fin of crack don't forget to clean up, here is very easy to accumulate dust

For oil bearing fan is concerned, motor  cpu fan drive shaft after a long time work less flexible is often the things. Therefore, suggest that we in this position add lubricating oil, recommend mechanical lubricating oil or gasoline engine oil. Of course, in the add lubricating oil must be careful, do not let it overflow.

In addition, the vibration problem is also need our attention, usually high speed rotating fan and cooling fin occurred high frequency collision, if the fan and cooling fin then stable appropriate, collisions vibration noise can be greatly reduced. Such as the high speed rotating CPU fan take in hand, the noise is far less than the fixed in the radiator, this is because the soft hands absorbed a large number of vibration. According to this principle, in the fan corners and fin between contact with 1 ~ 2 mm thick soft gasket (such as leather, rubber), can effectively reduce the fan and cooling fin vibration produced by the noise.

Special fan governor, some fans  cpu fan have the speed regulating function

In the summer, many users can choose to stop overclocking, the high power fan obviously is unnecessary. Lead to fan sound too much the most main reason is that it extremely high speed. If we will fan droop down, so the noise problem will be further ease. In fact, even if we use the CPU fan can't adjust speed, we can also through the special fan governor and make up. ZALMAN company launched FAN MATE1 FAN governor in the domestic market is very popular, kyushu Aeolus have similar products. The use of this kind of fan governor is very simple, you only need to will CPU fan power interface on fan governor, and then fan governor connection on the mainboard CPU fan power interface can be.

As for the beginning ability strong user, you can try to reduce the working voltage of the series resistance method. As for the resistance value, we can use the CPU fan on the nameplate calculation (remember P = UI, R = U/I can), and at this time we can get any voltage. Want to remind everybody  cpu fan finally, reduce the CPU fan speed after, must in the BIOS open the corresponding temperature monitoring function, to ensure safety. Of course, when that can put the alarm temperature and shutdown temperature setting a few higher.