Laptop Cooling maintenance tips each CPU cooling fan is an essential accessory. Good selection of performance CPU cooling fan, to enhance system stability and prolong the working life of the CPU has a great help. Currently available in the market are mostly CPU cooling fan is aluminum alloy as the interception of a heat sink, then the self-tapping screws to secure the fan on top is made of plastic, workmanship is simple, inexpensive, seemingly similar, the actual performance in the heat also there may be no small difference.
Of course, big fan of wind, low noise, high speed, fixed firmly on the heat sink is preferred. Average high speed fan blades have a larger installation angle, closer scrutiny is not difficult to discern. If you think the fan label parameters and credible, may require testing at the time of purchase, feel the fan speed, wind and noise, which determine the merits of the fan. Some fans in the entire radiator in the upright position only when the normal operation of its side or upside down occurs when the speed slows down or even stall.
CPU cooling fan side effects of inhalation of dust, more dust not only impede the ventilation fins will also affect the rotation of the fan, so the fan after a period of use need to be cleaned. When cleaning the heat sink and fan need to first disassemble, heat sinks can be directly rinsed with water for fan and heat on a viscous oily dirt, use a cotton swab or tweezers or a small piece of cotton cloth to wipe clean.
The fins of the heat away due to the heat generated when the CPU work is by conduction to the heat sink, then blowing cold air brought by the fan, the fan heat conduction with the size of the heatsink, generally , the greater the contact area of the heat sink and air, the better the cooling effect of the fan, but this statement is a premise, and that is enough free space in the chassis.
If the computer's chassis would have space for heat dissipation is not large, not enough space left, a very large area of the heat sink is difficult to install the chassis, even if reluctantly installed into the chassis, much of the contact area will also block heat sink the hot air around quickly dispersed, resulting in the overall temperature inside the chassis, so as to affect the operating performance of the entire computer, so I suggested that the heat sink size of the area should be chosen and chassis to match, can not be a pursuit of large area heat sink.
The blades of the fan exhaust volume is large, this argument is wrong because the fan exhaust volume is a comprehensive index, which is the most direct measure of the performance of a fan, its size is not only the size of the fan leaves related to the size, but also with the design in the form of the blade, fan thickness and blades of the declination. A large size of the fan blades, but the blades flat, it will not form any airflow, the fan exhaust volume is zero, so the relationship between the cooling fan exhaust volume, the angle of the blades is the decisive factor. Buy a fan, if we want to check the amount of exhaust fan, as long as the hand on the heat sink near to feel the strength of the wind blowing on it, usually large amount of exhaust fan, even though we are very far away from the fan location, you can feel the wind airflow.
Many people believe that the higher the fan speed, then at the same time, the more heat away from the CPU, the easier it so that the CPU cooling, the fact is not so. If the fan speed exceeds the standard value, then the fan is running in the overload case, a long time, the heat away from the CPU is smaller than the heat generated in the high-speed rotation process, so that a longer time to run, differential heat greater, such high fan speed not only can not play a very good cooling effect, but that the CPU temperature increased dramatically; Moreover, the higher the fan speed, noise may be generated during operation, the greater the worst case, could allow the fan or CPU scrapped off;, to get the high-speed operation of the fan, must also have greater power to provide power source and high power source is obtained from the motherboard and power supply in the high-power, motherboard and power supply in the overload power will often cause system instability. So, the higher the fan speed cooling the better argument is not valid.
80 fan blades, naturally large amount of wind can be taken away more calories per unit time. With large heat sink can be relatively easy to do a good cooling effect. But for 80 Specifications fan, the wind pressure and noise contradiction prominent, if you want to have a greater air pressure (that is, to a higher speed), the noise problem will become very serious. Mute fan would give rise to the problem of insufficient air pressure, wind less than the bottom of the heatsink with dense fin heat sink will make. So we see that most of the 80 fan radiator will be more sparse large radiator with fins.
60 fan blades small amount of wind. 60 of the fan high speed even if they will not issue too much noise, so 60 fan is easier to have a greater air pressure. Selection of excellent workmanship fan 60 coupled with dense small fins on the heat sink, often able to achieve a very high standard.
Features 70 fan is between 60 and 80 between the two, it is more moderate. But precisely because the features are not prominent, so the manufacturers are not many. To sum up, if it is to their own computer mute the premise that the effect of heat, should be the preferred type 60 fan with a well-made heat sink.
On the shape of the blades, the number of blades, in order to achieve the purpose of quiet, of course, is preferred sickle and the number of blades as much. Many famous products is not very concerned about these areas because so much of the impact of these factors on the performance is not as bearing and speed.
The wind out of the way, I'm not optimistic about the centrifugal fan noise is the same premise, it's not as good as the air flow pressure axial flow.