How much power does the computer consume when it is in standby mode?
If the host is in hibernation, the power consumption drops to 0W, which is equal to the power consumption of shutting down.
In the power options of Windows 7, you can set the sleep time of the screen and the computer separately. Interestingly, when the monitor sleeps, the host still operates as usual. From the data point of view, in idle state, the power consumption of the screen and host is 24W and 88W respectively. When the screen's sleep time is reached, the screen's power consumption will drop from 24W to 0W. At this time, the host's power consumption is still 88W and will not be affected by the screen sleep. However, it can also be seen in the test that when the screen is in sleep mode, the power consumption of the host will fluctuate between 87 and 88W.
When the screen sleeps, it has almost no impact on the power consumption of the host. The power consumption will be slightly reduced, but this value is low enough to be ignored. Under the same environment, if the host is hibernating, you can see that the power consumption of the screen and host drops from 24W and 88W to 0W respectively, which is equal to the power consumption of shutting down. What is the standby power consumption of a mobile phone?
Generally speaking, if a 7V800MA battery is on standby for 4 days, the power is 3.7*0.8*1/96=0.03w. What is the power consumption of a computer?
It’s not necessarily how much, desktop or notebook, desktop depends on the type of monitor, CRT consumes more power than LCD, the power of the chassis is 130-300 or higher, the power of the speaker is more, playing games than watching movies Power consumption, the CPU consumes more power. Laptops are naturally very power efficient, around 11V. How much power does a computer consume?
The power supply power is 300W, which is the maximum power. Computers generally do not run at full load, so it is usually around 250W. The average power of CRT monitor is 100W, and the average power of LCD monitor is 50W. In this way, the CRT monitor + computer is 0.4 kWh/hour. In this way, the LCD monitor + computer is 0.3 kWh/hour. Generally, one kilowatt hour of electricity can last about 3 hours. How much power does an average computer consume?
Nowadays, the application of computers has become very common. How to correctly treat the power of computers has become a difficult problem faced by our electrical designers. There have been many debates on the Internet, but there is no unified statement. Based on my experience in playing with computers in the past few years and some information found on the Internet, I will now make a brief summary of computer power issues, hoping to get corrections from colleagues.
What we call the power of a computer refers to the total power consumption of the computer, which includes the power consumption of the following major devices: 1. CPU, 2. Graphics card, 3. Hard disk, 4. Motherboard , 5. Optical drive, 6. Memory, 7. Network card, 8. Sound card, 9. Self-loss of power supply, 10. Monitor. The following is an overview of the power of each device:
1. CPU: The CPU is the heart of the computer and the main energy consumer of the computer. Currently, the maximum power of INTEL's P4 mainstream CPU does not exceed 84W. For those of us who do CAD drawing, the CPU we use spends most of its time waiting for tasks and rarely runs at full load (the CPU usage can be seen in the task management of WINDOS2000, and the general usage is around 50%) So under normal circumstances, the CPU works at less than 50W. The maximum CPU power of P3 is more than 60 watts, and the maximum CPU power of P2 is more than 30 watts. AMD CPUs generally consume more power. However, computers are constantly developing. Now INTEL's latest model of CPU is said to have a power of up to 150W. Moreover, the power consumption of the same model of CPU varies depending on the usage environment and processing tasks. For general office computers, since the tasks processed are not heavy, the CPU is used under non-full load conditions most of the time, and the CPU power generally does not exceed 50W (in fact, we use P4 computers for office work a lot of time, and the work done is similar to It’s almost the same with P2, so the power consumption is not large). For those players who often need to do 3D effects and like to play games, the CPU needs to run under a very high load and consumes a lot of power. Moreover, those computers are high-power computers, and many people like to overclock, so the CPU power should be at least The calculation is 80W. Considering the needs of future development, the CPU power can be taken as 150W. Therefore, it is recommended that high-end Internet cafes, residences, and computers that mainly focus on games, as well as computers that need to do 3D, should consider the computer CPU to be 150W (for future planning). The CPU fan is an essential component for cooling the CPU, and its power can be calculated based on 5W.
2. Graphics card: The graphics card is the graphics processing center of the computer. Since different groups have different requirements for the graphics card, the power consumption of the graphics card is also very different, from an integrated graphics card of more than ten watts to an integrated graphics card of seven watts. High-end mainstream graphics cards with more than ten W are widely used. But even for the same model of graphics card, the power will vary greatly depending on the usage environment. The following is a reference to the GeForce6800 Ultra review published by the Hong Kong website HKEPC: HKEPC uses an ordinary ammeter for testing, and then makes an approximate calculation of the power.
In 2D mode, the input current of 5V is 1.86A, which is about 9.3W, while the current of 12V is 1.97A, which is about 23.64W, which is a total of 32.94W. In 3D mode, the amplitude of the current is very large. It all depends on the workload of the GPU and the complexity of the picture. We used 3DMark03 for testing. It turns out that the most complicated task is not MotherNature of Game4, but Fill-Rate (MutilTexture). ). In this test project, the input current of 5V is 3.01A, which is about 15.05W, while the current of 12V is 4.50A, which is about 54W, which is a total of 70W. It can be seen from the above data that the gap between the same model of GPU when processing 2D graphics and 3D graphics is more than double. For our general office computers, since most of them use integrated graphics cards, the maximum power consumption is more than ten watts, which generally does not exceed 15W. Even if a non-integrated graphics card is used, it is a low-end graphics card, and the power does not exceed 20W. Yes, it is recommended to take 20W. For high-end Internet cafes that focus on games, residences, and computers that need to frequently do a lot of 3D, for future development needs, it is recommended to choose 100W.
3. Hard drive, the power of hard drive is not high. Currently, the maximum power of ST hard drive is 12.5W, while that of notebook is only about 5W. Moreover, we do not frequently write and read data from the hard disk, so the hard disk usually works under no load most of the time, and the power is only about 5W. Since large hard drives will be the development trend in the future, considering development needs, the desirable hard drive power is 15W.
4. Motherboard. The motherboard itself does not consume much power. Considering future development needs, the power is set to 20W.
5. Optical drive: The power consumption of an optical drive is generally about 10W. Taking into account future development, it is set to 15W.
6. The power consumption of memory, network card, and sound card is very low. Due to the lack of specific data, the total power consumption of the three will not exceed 20W, calculated as 20W.
7. Power supply. The power supply is the most critical device required for the operation of the computer. If it is missing or it does not operate normally, it will have adverse effects on the operation of the computer and even cause accidents. This is also the object of our focus. The current is divided into two paths after passing through the front-stage rectifier and filter circuit. One line is always powered, that is, the output is +5VSB. It is a standby voltage that is supplied to the motherboard, that is, it is output to the motherboard when the power supply is not turned on. It is used to be responsible for network startup, keyboard startup, soft startup, etc. The maximum power will not More than 20W. But we rarely use those functions, so generally there is almost no power loss. The other circuit is a circuit that can only provide power when the computer is turned on, and is responsible for supplying power to the CPU and other devices mentioned above. Also, since there are transformers and shaping filter circuits inside the power supply, when the computer is working, as long as the power supply is connected to the circuit, there will be some power loss. The power supply's own loss is estimated to be 5 watts.
There is also the issue of power factor of computer power supply, which is a very important aspect that we are concerned about. For computers and all other electronic circuits that operate on DC voltage, they cannot work without reactive power. In order for computer circuits to work properly, they must be supplied with a smoothed DC voltage. This "smoothing" work must be completed by the filter capacitor C connected behind the computer power rectifier. This filter is like a reservoir. A sufficient amount of charge must be stored in the capacitor so that the working voltage on the circuit remains uninterrupted and maintains a normal level when the blank between the rectified half-waves is rectified.
In other words, even when there is no input power between the two pulsating half-waves, the voltage level of Uc does not change significantly. This function is realized by the energy storage in the capacitor. The storage This part of the energy in the capacitor is reactive power. Therefore, computers rely on the support of reactive power to ensure that the circuit correctly uses active power to achieve normal operation.
Therefore, it can be said that computers not only need active power, but also need reactive power, both are indispensable! A recent study by PCMagazine magazine in the United States showed that the typical power factor of a computer is 0.65.
8. Monitor: The monitor can be calculated as 100W, but with future development, LCD monitors will become more and more popular. The power consumption of LCD monitors is very low, below 50W.
In addition, the power of computer speakers and other peripherals can be calculated as 30W.
In summary, the power calculation of the computer should be calculated separately according to different occasions and different requirements. For a general office environment, the power of a computer is roughly: CPU 50W + graphics card 20W + hard disk 15W + motherboard 20W + optical drive 15W + memory, etc. 20W + power supply 5W + speaker 30W + monitor 100W = 275W. If speakers and optical drives are not needed, it is roughly 230W. I calculated this capacity It has been calculated in advance. Under the current situation, office computers will not exceed this number, and many current CRT monitors will not exceed 85W due to the adoption of energy-saving measures.
In addition, computer power supplies have a large inductive load, so they are more likely to cause induced current and leakage to external equipment.
When we take apart a computer, we usually wash our hands first to release static electricity from our bodies to avoid harming the equipment. However, after washing our hands, the resistance of human skin will decrease. Therefore, every time we touch the computer, we will encounter strong leakage, and the leakage current is relatively large, and our hands will feel numb. Therefore, I think the computer socket should be equipped with protective wires, and it is best to install a leakage protection device. Especially for those occasions where children may come into contact with the computer body, more attention should be paid to the computer's leakage protection.
How much power does a 15-inch color display consume?
15-inch 50 to 60W
What is the power consumption of a 17-inch 80 to 120W FX8150 CPU?
125W
AMD FX 8150
Product category: CPU Brand: AMD
Socket type: Socket AM3+ CPU frequency: 3.6 GHz Maximum Turbo Frequency: 4.2GHz Manufacturing Process: 32nm L2 Cache: 8MB L3 Cache: 8MB Number of Cores: Eight Cores Core Code: Bulldozer Thermal Design Power Consumption (TDP): 125W Applicable Type: Desktop 1KVA 700w UPS Power Consumption What is the power? Is it 700w?
The 1KVA 700W specification means that the UPS can provide continuous power to electrical appliances with a total power of 700W after a power outage. How long it can provide depends on the capacity of the battery pack. After the UPS battery is fully charged, it is in standby mode and consumes less power.
If the battery is discharged and then recharged, taking three 12V 7A batteries as an example, not counting charging losses and consuming 252W when fully charged, how much power does the router consume when it can provide 10-20 minutes of power for an electrical appliance that consumes 700W?