The power supply of computer motherboard fans is a common problem. It affects the fan's speed, cooling effect and service life. This article will delve into the power supply of computer motherboard fans, introduce the advantages and disadvantages of different power fans, and guide you to choose the appropriate fan. By reading this article, you can learn how to optimize the power supply of the motherboard fan to ensure stable operation of your computer and extend the life of the fan.
20~70 watts.
The power of ordinary household fans is usually around 20 to 70 watts. Electric fans with smaller powers are generally smaller in size. If it is only used in the bedroom, choose a small fan of about 20 watts to 30 watts.
The formula for calculating computer power supply power is: Power = Current × Voltage. Generally, the power of a standard desktop power supply is between 300W and 500W. If you have special needs, such as needing to install more hardware, then you need to calculate the required power based on the actual situation.
First you need to know the power consumption value of each hardware and add them up to get the total power consumption value. The power consumption value of general hardware can be found in its specifications.
Next, you need to consider leaving some margin to deal with some unpredictable situations.
Finally, calculate the power of the power supply based on the total power consumption value
You can use Master Lu to check the power of your computer.
Now download an installation step online. It’s not too difficult because pictures and information can be found online. Of course, if you have done it before, the chance of success is over 95%.
If you have never done anything before and it is your first time, the chance of success may be 70%. It takes some effort. Hope the above answer can help you.
Basic formula for calculating UPS power supply time:
Active power of the load × support time = battery discharge capacity × battery voltage × UPS inverter efficiency
Among them: active power of the load Power = total load power × load power factor UPS inverter efficiency ≈ 0.9
Battery discharge capacity = battery nominal capacity , can be determined by referring to the following table: Discharge current 2C 1C 0.6C .4C .2C 0.1C 0.05C Discharge time 12min 30min 1h 2h 4h 9h 20h Discharge efficiency 0.4 0.5 0.6 0.7 0.8 0.9 1 b. Calculation formula:
The active power of the load The voltage is 96V, the required support time is 1 hour, and the battery capacity should be selected.
Calculation:
3000 (VA) × 0.7 × 1 (h) = battery discharge capacity × 96 × 0.9
Obtained: battery discharge capacity = 24.3 (Ah)
Battery nominal capacity = 24.3/0.6 = 40.5 (Ah)
Result: 38Ah battery can be used (12V/38Ah battery 8 pieces
ups power backup time calculation
How long can the UPS backup power supply after a power outage? This is something that every communication equipment maintenance personnel is concerned about. Many people want to know how to calculate the UPS power supply backup time. People's instinct is to look for the UPS backup time calculation formula. In fact, it does not need to be so complicated. You can use the power assistant to directly enter the parameters and get the result.
How to calculate the computer power supply? ##The formula for calculating computer power supply is: power = current × voltage. Generally, the power of a standard desktop power supply is between 300W and 500W. If you have special needs, such as needing to install more hardware, Then you need to calculate the required power based on the actual situation.
First you need to know the power consumption value of each hardware and add them to get the total power consumption value. Found in the specifications.
Next, you need to consider leaving some margin to deal with some unpredictable situations.
Computer, rated power calculation?
The so-called rated power of computer power supply refers to the standard power output of the power supply
And we also know that the power supply output circuit has many branches. . The rated power we are talking about here mainly relies on the power provided by the 12v branch. For example, the current provided by 12V is 37.5A, then 12V*37.5A=450W, the rated power of this power supply is 450W
At the same time, the current of 3.3V is 24A and the current of 5V is 22A, then 3.3V*24 5V*22A=110W, plus the rated power of 450W, the result is 560W, which is what we commonly call the peak value Power or maximum power
It should be pointed out that when we look at power supply power, we generally focus on the rated power, and the peak power is relatively secondary. Because if a power supply operates at peak value for a long time, the loss will be serious and its service life will not be long. Therefore, when we install a machine, we mainly look at whether the rated power of a power supply meets the requirements, rather than the peak power. In other words, it mainly depends on the current parameter of the 12V branch (voltage multiplied by current to get the power)
General household computer power calculations are mainly: the accessories CPU, motherboard, hard disk, optical drive, graphics card, etc. in the host computer are 150W. The LCD monitor is 17 inches, which is 40W. The total power consumption is 190w per hour. 190×1=190 watt hours, which is 0.19 kilowatt-hours of electricity.
That is to say, this computer uses about 1 kilowatt hour of electricity for 4-5 hours. This is the maximum power consumption. In fact, not all hardware can work at maximum power.We usually look at the power of the power supply when looking at computer power, such as 500 watts, 600 watts, etc. In fact, under normal circumstances, the actual total power of the computer cannot reach the power provided by the power supply. Let's calculate the total power of the computer.
A computer is composed of CPU, graphics card, motherboard, memory, hard disk, monitor, and various peripherals. To calculate the total power, you can calculate the total power by adding the power of these computer components together. Generally the total power will not exceed the power supply.
1. Computer power supply power calculation formula Step 1: First calculate the power consumption required by the CPU
2. Computer power supply power calculation formula Step 2: Then determine the power consumption of the graphics card
3. Computer power supply power calculation formula Step 3: Determine the power consumption required by the motherboard, hard disk, and memory
In addition to the two major power consumers, the CPU and the graphics card, the motherboard, memory, The hard drive will also consume a certain amount of power, but the power consumption of these accessories is very low. Generally, their combined total will not exceed 30W-50W.
4. Computer power supply power calculation formula Step 4: Add the power consumption of the previous steps 1, 2, and 3
Finally, we add the power consumption of the previous steps 1, 2, and 3. You can get the total power consumption of the entire platform by adding it. For example, if the total power consumption of the platform you calculated is 580W, then just choose a 600W power supply. (Because what we calculate is the peak power of the accessory, the selected power supply wattage only needs to be greater than the calculated power. Unless you want to consider overclocking, then you need to add a certain margin on this basis)
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