Bottom Power Supply Should the fan of the power supply be up or down?

When the power supply is lowered, the fan of the power supply is downward, and the main reasons are:

The power supply under the fan is lowered to draw in more cold air for better heat dissipation. The power supply is set to be separated from other components and dissipate heat independently. The power supply needs better heat dissipation, so it is set to absorb cold air for heat dissipation at the bottom.

If the fan is facing up, it will take away the heat from the graphics card, CPU, and other parts. By the time the air reaches the power source, the air is already hot. At this point, the power supply cannot dissipate heat.

When the power supply is in a high thermal state for a long time, the power supply will be damaged when it is in a high thermal state for a long time. The traditional chassis has power to rise and hot air.

Up, the power supply of the computer is very convenient, for high-power components, the heat is not as good as the power supply down.

Generally, such a chassis also makes a honeycomb hole at the position of the power supply fan, which is convenient for the power supply to suck in the cold air outside the box, dissipate heat from the power supply, and then discharge it from the honeycomb hole at the tail of the power supply. If the power supply is lowered and the fan is up, it will disturb the air duct in the box, the hot air flow is rising, the cold air enters the chassis and becomes hot air to rise, and the rear and top fans will pump the hot air away, and the power supply fan will compete to pull the hot air down, and the air duct will be chaotic.

Blowing and exhaust to see the practical application, the fan has two sides, one side is the fan blade, the other side is the fan blade seat, the fan blade side is the fan blade rotation, is the air intake, the fan blade seat is fixed fan blade, can not move, is the air outlet, then, the front fan position of the chassis, the fan blade base is towards the inside of the chassis when installed, to achieve the cold air outside the box to suck in, the lower fan is the same, the fan blade base to the inside of the chassis; The rear and top of the chassis are to extract the hot air in the box, and the fan blade base is facing the outside of the chassis when installed, and only the fan blades can be seen after installation, so that the hot air is pumped out of the box.

The fan goes down and up to interfere with the airflow of the CPU.

The wind needs to form a convection current in order to dissipate heat, and the wind goes in one direction, one in and one out, so that the heat is taken away.

It depends on whether the fan is turned correctly, in order to form convection and shoot out the chassis to facilitate the fan below should be to draw in the air from the outside, and the fan above is to exhaust upwards, if it is not right, it will be corrected.

The fan of the lower power supply is facing upwards, so it is inconvenient to dissipate heat if it is facing downwards.

1. The lower power supply can form an independent air duct, which will not be steamed and roasted by the high heat emitted by the CPU. This is especially evident in high-end platforms and 12cm fan power supplies.

2. Because the high-end CPU motherboard emits huge heat, the power supply will directly eat these hot exhaust gases, which will have an adverse impact on the life and stability of the power supply.

3. The lower power supply can form an overall vertical air duct through the upper and lower openings and the CPU side blowing heat dissipation.

1. Downward-blowing, chassis fan The exhaust direction of the fan installed in the upper part of the chassis is outward; The fan installed in the lower part of the chassis blows inward in the direction of exhaust air.

2. Laptop fan Generally, there is only one cooling fan in a laptop, if it is a notebook with an independent graphics card, it is basically arranged in a position parallel to the CPU in order to share the heatsink blades. The fan is generally installed in the upper left corner, and the direction of the fan blows outward according to the movement law of the low temperature air to the high temperature air flow hall.

3. The power fan plays a great role in imitating socks. First of all, the CPU is the brain of the computer, so the power supply, it is not only an important part of the computer, but also the heart of the computer. The computer power supply fan is the function of cooling the heart, if the computer power supply fan fails, it will directly affect the stability of the computer power supply.

The computer power fan is facing downwards.

The power supply fan is facing down to draw in more cool air for better heat dissipation. The power supply needs better vertical heat dissipation, so it will use the lower way of the power supply, which can absorb the cold air at a lower temperature at the bottom of the chassis for heat dissipation.

Symptoms of computer power failure:

After the power supply is damaged, the following symptoms will generally appear, first, the computer can not be turned on, or the screen is black after booting, the monitor can not display anything, in some cases, the computer can be turned on, the monitor can also display the content, but the computer will often restart for no reason.

In order to further determine whether the computer power supply is damaged, you can open the computer main chassis, unplug the power cord on the motherboard, and use a wire to short the green and black wires next to the power connector. If the power supply fan can rotate after power-on, it means that there is no problem with the power supply, otherwise, it proves that the computer power supply has been damaged. <>

1.Generally, the power supply placement part of the lower power supply chassis has an exhaust hole corresponding to the power supply ** device and the exhaust fan, so that the power supply fan part can be installed in line with the exhaust outlet, that is to say, the power supply fan is installed downward in the direction of the power supply fan.

2.One way is to install the power cooling fan upwards, which can take into account the heat dissipation of the chassis, one fan with two functions.

3.The chassis design concept is different, both up and down, see how the chassis is installed, if you are not satisfied, you can make it yourself.

4.The CPU power supply cable is long enough, if it is not long enough, the fan is down, pay attention to the hole under the lower power supply, which is the air duct for air intake and heat dissipation left for the power supply.

5.The fan port is installed downward, and there is an air inlet tunnel on the bottom plate of the power supply installation position of the lower chassis, so that the screws can be applied to the fan position.

The power supply should be placed underneath, and the fan should be facing downward.

The power supply is placed on the bottom to separate it from other components for independent heat dissipation, and the high-power power supply needs better heat dissipation, so it will use the lower heat of the cold air at the bottom of the case for heat dissipation.

If the fan is facing up, it will take away the heat of the graphics card, CPU and other components, when the air reaches the power supply, the air is already very hot, at this time, the power supply can no longer be dissipated, when the power supply is in a high heat state for a long time, the power supply will be damaged. The traditional chassis uses the power supply up, and the hot air goes up, which is very convenient for computers with little power, and the heat dissipation situation is not as good as the power supply for high-power components.

The fan of the lower power supply is facing upwards, so it is inconvenient to dissipate heat if it is facing downwards.

Benefits of Power Undermounting:

1. The power supply can form an independent air duct, which will not be steamed and roasted by the high heat emitted by the CPU. This is especially obvious in high-end platforms and 12cm fan power supplies, because high-end CPU motherboards emit huge heat, and if they are placed on top, the power supply will directly eat these hot exhaust gases, which will have an adverse impact on the life and stability of the power supply. If you have a temperature-controlled fan, you can also reduce noise by mounting it underneath.

2. It can lower the center of gravity of the chassis and enhance stability.

3. When the power supply is lowered, the space under the graphics card increases, and more abundant cold air can be used to dissipate heat from the radiator through airflow.

4. The overall vertical air duct can be formed by opening holes up and down and blowing on the side of the CPU to dissipate heat upward.

Disadvantages of the power supply underneath:

1. It is easier to accumulate dust, so if you want to buy a chassis with a power supply underneath, you have to buy the kind with a foot pad and a dust filter.

2. The length of the power supply will be insufficient.

Facing downward, otherwise the power supply fan and the graphics card fan will be in opposite directions, which will affect the heat dissipation of the graphics card.

If the ash is too large, you can add a dust net or dust cotton.

Of course, if it's an integrated graphics card, it doesn't matter.

Children's shoes are installed with a power supply underneath, which is more particular 1First of all, use the under-mounted power supply, it is recommended to use a dedicated chassis to avoid the trouble of modification2If the air intake is downward, there will be a honeycomb air intake in the lower part of the dedicated chassis with a dust filter.

3.If the air intake is upwards and the air is drawn from inside the case, a fan is generally installed between the power supply and the graphics card to supplement the new air source to prevent the graphics card and the power supply fan from generating dual suction airflow and affecting heat dissipation.