The noise of the computer mainly comes from the fan, a lot of information on the fan has been introduced to oil to reduce the noise of the method, but I think the fan's noise becomes bigger is not necessarily because of the lack of oil bearings, the following on the reasons for the fan noise and to the specific operation of the fan oil, to explain their own experience and understanding.
The fan blade "eccentric" is the main reason for the noise. High-quality fan, the center of gravity of its fan blade on the axis, running very smoothly, the noise is very small, while the poor quality of the fan, there is often a certain deviation, the center of gravity of the fan blade is not in the axis caused by the "eccentric", so that the fan rotates, it is the equivalent of an oscillator (oscillator is in the motor shaft to add an eccentric wheel). With the use of time becomes longer, the fan bearing gradually wear, or fan heat sink installation is not solid, loose, etc., will make the vibration intensify the noise becomes bigger. The simplest solution to this type of failure is to try to install the fan firmly, so that the vibration does not get up, of course, this method does not solve the substantive problem, because the fan blades are still "eccentric"; another method is to the fan bearings at the injection of oil, vibration play a buffer role, thus weakening the noise; there is also a way to get at the root of the Problem solving: remove the fan blade, with a thin line through the fan blade center hole lifting fan blade, if one end down, indicating that this end of the heavy, can be ground on the grinding wheel a few times, so a few times, and then lifting the fan blade with a thin line, if the fan blade can be stationary in the horizontal position, indicating that the transformation is successful. Fan oiling a few questions:
1. sewing machine oil or oil, I recommend using four-stroke motorcycle oil, because sewing machine oil is very thin, fluidity and volatility of the strong, after the injection of oil can not be used for a long time on the absence of the fan will be the "old disease recurrence", and the cushioning effect of the vibration of the sewing machine oil is very small, not much for reducing the noise, the effect is not very good. For reducing the noise, the role is not great, with the oil just to avoid the above two shortcomings.
2. The sealing problem after the oil injection, the fan oil injection parts with a labeled paper, remove the labeled paper after the oil injection, the labeled paper generally can not be used again, with what to replace it? I chose four or five layers of transparent tape paper. Find a roll of transparent tape paper, with a knife horizontal cut a knife, cut through about four or five layers, and then the four or five layers of transparent tape paper together can be used. Note that you can not just use a layer of tape paper, because a layer of tape paper in the fan rotation is easy to vibrate noise, and may be broken to cause oil splashes. Instead of labeling paper, transparent tape paper has the added benefit of showing whether the fan is low on oil at a glance, without having to disassemble it.
The fan in the chassis will generally have two, one is the CPU fan, the other is the power supply fan, through the experts to learn, the size of the fan noise and the bearing of the relationship between the largest, the bearing is a fan of the heart. We common fan bearing types are the following:
Oil bearing, this type of bearing structure is generally iron ring on the copper core, the middle sealed grease. This type of fan upfront noise is relatively small, the cost seems to be the lowest. But the life expectancy is relatively short, generally within 20,000 hours. At the end of the use due to the consumption of grease, the noise will also slowly increase, the speed is also decreasing. This type of bearing is generally priced at less than $10, and is predominantly a small branded product.
Ball bearings, this is the world's most common bearings, two iron ring in the middle of some steel balls or steel columns, and supplemented with some grease to reduce friction. Fans using ball bearings are also the most common on the market because it has a long service life, generates little heat, the noise level will be stable, and the cost is not high. Major brands such as Jiuzhou Fengshen and Overclockers are using this type of bearing.
Mixed bearings, generally an oil bearing with a ball bearing, intended to play the strengths of both, to complement each other. There is also the use of two ball bearings, which can effectively extend the service life of the product, the general life of double ball bearings in more than 50,000 hours, mostly used in servers.
The alloy bearing, which is patented by CoolerMaster, is used in all of CoolerMaster's mid-range and high-end products. This bearing has a core with reverse spiral grooves and oil retaining grooves, so that the oil contained in the fan will form a reverse backward flow when the fan is running, thus avoiding the loss of oil contained in it, and thus enhancing the life of the bearing. This design makes the fan significantly less noisy and extends the life of the fan, albeit at a slightly higher price.
Magnetic levitation bearings, a technology brought to you by the famous radiator manufacturer AVC, are also used in some of Tt's products. The magnetic levitation fan uses the principle of magnetic force to make the fan suspended and by virtue of the magnetic levitation force to suck the fan blades into a 360-degree fixed orbit around the center of the axis to form a stable rotation. There is no contact between the two ends of the bearing of the magnetic levitation fan, completely avoiding friction and thus prolonging its life. This technology overcomes the shortcomings of traditional fans, such as uneven rotation speed, easy to rotate obstruction, and roller fan running mechanical noise and easy to be damaged by the impact.
The nano-ceramic bearing, developed by Foxconn, has a longer life, higher efficiency and lower noise, and is currently only found in Foxconn cooling products.
Through the above knowledge we can learn that the Great Wall power supply used by Jiale computer, the use of oil bearing, although not used for a long time, but due to Bozhou close to the Yellow River, the recent cooling faster, the user's use of the environment to improve the temperature improvement has not yet had time to keep up with the fan bearings in the sealed grease due to the low temperature produced by the solidification of the fan bearings, so the start-up will produce a greater noise, and then because of the The temperature of the rotating friction r melts the grease, the lubrication conditions are improved, and the noise naturally disappears.
How to solve the computer host noise
First, reduce the power supply noise
1. Clean the power supply fan dust
First of all, prepare a small bottle of oil and a toothpick, and then the power supply from the chassis, open the power supply casing, will be unloaded from the fan, to find the location of the fan blades on the gathering of dust, and with a soft brush will be cleaned up. After the cleanup work is completed, in the middle of the front of the fan will generally have a roll of labels, the roll of labels can be seen to unveil the fan bearings, with a toothpick dipped in lubricating oil point in the bearings, pay attention to the amount of oil to be appropriate. After finishing, stick the label back to prevent dust from entering, and then restore the fan and power supply can be. We need to remind you that, for the fan oiling, do not just use oil, poor quality oil not only does not help lubrication, but will make the bearing accelerated wear, we should choose a special product or you can use high-quality sewing machine oil instead.
2. Replace the silent power supply fan
Users can also consider replacing the silent power supply or fan, there are a lot of silent power supplies on the market, these power supplies are usually after rigorous testing, can effectively reduce the power supply noise. In addition, you can also replace the power supply with a better cooling fan. The process of replacing the power supply fan is very simple, and the key is to pay attention to the connection part of the fan and power supply.
3. Buffer shock
For the power supply, the location of the need to shock not only the connection between the fan and the power supply, but also the connection between the power supply and the chassis, in addition to be fixed firmly in addition to the contact position can be added to the thin cloth, rubber pads and other buffers, or even buy a special power supply shock products.
4. Prevent high-current shock
If the user's power supply noise is due to the instantaneous high current caused by the power on, you can install a filter or change to a better quality power supply to prevent high-current shock noise. You can also buy some smart power sockets with filters to connect to the host to ensure that the computer power supply is not interfered with by the external current.
Second, reduce CPU noise
1. Replace the fan or add a buffer
Since the CPU fan is the source of the noise, we can replace the CPU fan with a lower noise. Of course, to ensure that the CPU fan to provide enough airflow to the CPU cooling, never blindly use a low-speed CPU fan to reduce noise, be sure to buy those specifically designed to reduce the noise of the silent CPU fan, we can also be in the fan and the radiator contact parts of the four corners of the installation of buffer cushions, such as sponge, rubber pads, and so on.
2. Replacing the radiator
If you can't stand the noise of an air-cooled radiator, you can replace the radiator, for example, by using a new heat-pipe technology radiator, which utilizes the vaporization and liquefaction of liquids to transfer heat. Of course, users can also choose a water-cooled radiator, which can achieve a good cooling effect and completely eliminate the CPU fan noise.
3. Installation of thermal fan speed controller
The so-called thermal fan speed controller, is a kind of automatic fan speed controller with a temperature probe, the use of temperature probe contact heat sink, and the fan is connected to the speed controller, when the temperature rises, the speed controller to control the fan to increase the speed, when the temperature is low, the speed controller to control the fan to reduce the speed, which also reduces the fan noise. This also reduces fan noise.
Third, reduce the hard drive noise
1. Reduce the *** vibration noise
If you want to reduce the hard drive noise, we must minimize and chassis *** vibration. We can remove the hard disk from the chassis to find that the hard disk does not have any connection with the chassis, the working noise will be very small. We can increase the rubber pads and other methods to reduce the hard disk and chassis *** vibration to achieve the purpose of noise reduction.
First, prepare four 1mm thick, fingernail-sized rubber pads, and then use scissors to open the center of the rubber pads, as long as the hard drive mounting screws can pass through. The next step is to install the hard drive into the hard drive cage of the chassis, and note that the rubber pads are stuck between the hard drive cage and the hard drive, and align the openings with the hard drive's captive screw ports. Finally, screw the hard disk fixing screws through the rubber pads to tighten them. In addition, you can also use elastic rubber strips to create a suspension system, that is, the use of rubber strips to suspend the hard disk in the hard disk bracket below, so as to avoid the hard disk and bracket rigid connection, but also to avoid the *** vibration noise.
2. Reduce read/write noise
To reduce the read/write noise of the hard drive, you can organize the hard drive on time to reduce archive fragmentation. This can reduce the range of movement of the magnetic head, the same can be to a certain extent to reduce the hard disk noise. Alternatively, specialized hard drive muting tools can be installed. These hard drive tools can extend the seek time of the hard drive, thus reducing the hard drive noise at the cost of reduced performance (around 1%). For example, a Maxtor hard disk can use the AcousticManagement (sound management) tool, in the pure DOS execution of the tool, there will be a command parameter prompt as in Figure 12, the first parameter for the Quiet mode (the quietest, but the hard disk performance is reduced by a large amount.); the second for the Fast mode (the quietest, but the hard disk performance is reduced by more.) The first parameter is Quiet mode (the quietest, but the hard disk performance is reduced more.); the second parameter is Fast mode (quieter, but the hard disk performance is reduced to some extent.) The third parameter is to turn off the noise reduction function (at this time, the hard disk performance is the highest but the noise is the biggest); the fourth parameter is to check the current operation status of the hard disk noise reduction function.
For IBM/Hitachi hard drives, you can use FeatureTool, the hard drive management program for IBM hard drives, which automatically creates an IBMDOS2000 floppy diskette, and then uses this floppy diskette to boot the system. Select the "ChangeAcousticLevel" item (Figure 13) in the interface that appears, and then you can change the sound mode of the hard disk, for example, you can select the low-noise QuickSeekMode or the high-performance NormalSeekMode. ). Of course, other brands of hard disk also have similar special noise reduction tools, you can go to the official website of the hard disk to find. In addition, motherboard chipsets have similar optimization tools, such as INETL's IAA (Intel Application Accelerator) software, which activates the hard drive's "Auto Sound Management" feature.
Fourth, reduce the optical drive noise
The noise of the optical drive or DVD drive is due to the physical movement of the internal components, so many manufacturers have developed several noise reduction technologies, such as Automatic Balance System (ABS), Dual Dynamic Suspension System (DDSS), etc., which can effectively reduce the noise, so it is best to buy products with these new technologies. And use software to reduce the speed of the optical drive to achieve the purpose of reducing noise. For example, the NERODriveSpeed program in the burning software NERO. After installing NERO, find NERODriveSpeed and execute, there will be a "NERODriveSpeed Options" window, in the "Speed Setting Value" option, you can set the value of the optical drive reading speed.
Fifth, the chassis itself, the noise reduction
If we pay attention to carefully observe, we can find that most of the sources of noise in the chassis inside, so the noise reduction must not forget the function of the chassis.
1. Bundle the cables in the chassis
For the scattered cables in the chassis, they should be organized and bundled to prevent the cables from the CPU fan, the Northbridge cooling fan, and the graphics card fan across the top, which not only allows the chassis to appear neat and organized, but also improves the cooling efficiency and reduces the noise.
2. Pay attention to the closed chassis
Many friends in order to facilitate the unplugging of hardware devices, the chassis is usually not closed, and some friends will even be the top of the chassis, the side panels are removed, the name: convenient heat dissipation. I don't know that this is a convenient way to dissipate the heat, but it also makes the noise a few levels larger. A closed chassis is not only an effective barrier to noise, but also prevents electromagnetic waves from harming the human body.
3. Installation of sound-absorbing devices
for the chassis installed sound-absorbing devices, the most simple is the use of sound-absorbing cotton, first of all in the easy to remove the side panels on the paste treble sound-absorbing cotton, this sound-absorbing cotton in a number of audio stores can be easily purchased, and its irregular wavy surface can make the sound of the reflection of the absorption of the sound is more complete, as long as the appropriate size of the crop, can be cut off from the noise of the 1/3! As long as it is cut to the right size, it can cut out 1/3 of the noise, which is quite effective for the high-frequency noise of all kinds of fans. In addition, this sound-absorbing cotton can also be pasted on the bottom of the chassis. As for the other side, due to space constraints, you can use the motherboard comes with foam material instead, for the bass and mid-range sound absorption effect. In addition, you can also install a sound-absorbing device at the power supply fan, and shield the power supply fan noise from the outside world to make it a seamless process.
4. Be careful with chassis fans
For the chassis, installing more fans is not only unhelpful to heat dissipation, but also easy to interfere with the wind path, resulting in poor heat dissipation. Therefore, to ensure that the chassis cooling smooth, in addition to the front of the chassis into the fan, rear or top of the exhaust fan is necessary, in fact, as long as we reasonably good construction of the chassis internal air ducts, the other location of the fan can not be used