Various sleep modes of Windows 7

First, leave for a short time with "sleep", let the computer take a nap for a while
usually use a computer, often there is such a situation: occasionally need to leave for a period of time, long or short, not very fixed, such as at noon or dinner at night in this way. At this time, if you turn off the computer, it seems to be a bit of a big problem, because many programs and web pages have to be reopened when you come back, but if you don't shut down, the computer is wasting electricity, if there is anything to delay, time from one It is not necessary to change the hour into two hours. In fact, you only need to enable the sleep function of the system at this time.
When you need to wake up after going to sleep, just press the power button or shake the usb mouse to quickly restore the working state before leaving and continue working. At the same time, after entering the sleep state, the computer will only have the memory power-on to save the data of the working state, while the other hardware is all powered off, so the power consumption is very low.
What is "sleep"?
When the computer is in sleep state, it will cut off the power of other accessories except memory, and the working status data will be saved in the memory, so that when the computer is reawakened, it can be quickly Restore the working state before sleep. If you need to leave the computer for a short time during work, you can use the sleep function to save power on the one hand and resume work quickly on the other.
Tip: There are two ways to enable the sleep function. One is to click sleep directly in the shutdown button of the start menu, and the other is to set the time in the computer power management, as long as the computer has no one to operate and has reached. After this set time, it will automatically go to sleep.
In addition, the methods for enabling hibernation, mixed sleep, and leave mode are similar to the method for enabling sleep.
Second, long time not used "sleep", let the computer sleep well
In addition to leaving the computer for a short time, sometimes we may leave longer, such as going out to work, maybe even one day Next to the computer, then at this time, it will not be turned off. If it is turned off, the programs, documents, web pages, materials, etc. opened in the computer will be reopened at the next boot! Very simple! Enable another useful function - “ Sleep & rdquo;!
Compared with the sleep function is to save the data in the memory, the sleep function is to save the data to the hard disk, after entering the sleep state, all the accessories are not powered, so the power consumption is almost zero! Even if the power is turned off during sleep, it will not affect the saved data. When the computer wakes up, all work can still be resumed normally. At the same time, because the data is saved on the hard disk, the speed of wake-up is much faster than restarting the computer.
What is "hibernation>?
 Hibernate> is a power-saving state designed primarily for laptops that saves open documents and programs to a file on the hard drive. (Can be understood as a mirror of the memory state), when the next boot, read data from this file, and load physical memory, this file is the same size as physical memory. Since the file written by memory during hibernation is a disk file, the speed of reading is much higher than that of accessing the disk during normal startup, so it is much faster than normal startup.
In addition, it must be said that after the hibernation function is enabled, a hibernation file with the same size as your memory will be generated on the system disk to store the data in the memory. The user should pay attention to whether the system disk has enough space. . For the stable operation of the system, the available space should account for about 10% of the system partition, that is, the 50gb system partition should have at least 5gb of available space.
Tip: If you do not use the computer for a long time, it is best to choose to shut down. In addition, some networked programs, such as web applications that need to log in, instant messaging software (most instant messaging software can automatically reconnect after recovery, but can not save the original dialog window) and many network management programs may appear after recovery It is not working properly, so it is best to quit these programs before the system sleeps.
Three, leave time is not fixed with "mixed sleep" let the computer choose their own
Well, we talked about leaving for a short time and leaving for a long time, but sometimes life is always full of variables - I do not Know how long to leave, what to do? It may be an hour, or maybe a day, sleep is not safe, sleep is not as convenient as sleep!
The best way is to let the computer choose it flexibly - if it is not powered, It will be restored from memory; if it is powered off, it will be restored from the hard disk. And this is the "hybrid sleep" function!
After the hybrid sleep is enabled, the computer will automatically go to sleep, but unlike the sleep state, the data stored in the memory will also be saved in the hard disk, so Even if the power is turned off, it will not cause data loss. When you wake up the computer, you can recover at a faster speed. This is the advantage of mixed sleep.
What is "hybrid sleep>
Hybrid sleep is unique to win7 and not available to winxp, which combines all the advantages of sleep and hibernation. After entering the hybrid sleep, the system will first save the data in the memory to the hard disk, and cut off the power supply of other devices except the memory. In the recovery, if there is no power failure, the system will recover directly from the memory, it only takes a few seconds; if the power is off, because the memory is still stored in the hard disk, you can also recover from the hard disk without worrying about the data. Lost.
Tip: Hybrid sleep mode requires the motherboard's power management to support s3 mode, but the general motherboard supports this mode. If your computer supports the Hybrid Sleep feature, then when you start Sleep after turning on the Hybrid Sleep feature, the system automatically goes into Hybrid Sleep.
four, hang up download with "leave mode", let the computer run low-cost
In addition to the above we will say that the computer will be in the "hang-up" state, there is another very different in daily life Important application - hang up download. In the past, we usually started the download process, then turned off the monitor and speakers to let the computer run automatically. However, in this state, some non-working hardware will continue to consume power, such as video cards and sound cards. In win7, we can enable the new "leave mode", which will not break the network, and will not affect the normal operation of the download program!
What is the power consumption situation when entering the exit mode? After the mode, the hard disk and memory will remain in working state, and the CPU will enter the low power state (if the CPU does not support any energy saving technology, then leaving the mode will cause the CPU to operate at the lowest frequency & times; the lowest FSB to reduce its power consumption. ), and unnecessary devices such as graphics cards and sound cards will be powered off. Although the power consumption is higher than the sleep mode, it is more power efficient than the normal boot download.
What is "Leave mode"?
The exit mode is similar to sleep, except that in the leave mode, file read and write operations can continue, while maintaining network connectivity, and unnecessary devices such as graphics cards and sound cards. It is off to save energy.
However, "Leave mode" requires hardware devices to support advanced power management and requires some setup.
First of all, you need to set the options for turning off the hard disk and going to sleep in the power management to "Never", otherwise the hard disk is closed, how can you download it? Secondly, you need to modify the registry to administrator rights. Open the Registry Editor and navigate to “hkey_local_machinesystemcurrentcontrolsetcontrolsessionmanagerpower”, create a new “dWord(32-bit)” value in the right pane and assign it to “1” Binary), it will take effect after restarting. Then click the “sleep” button in the win7 start menu to automatically enter the “leave mode”.
Tip: In the process of saving sleep, do not press the computer power switch, otherwise it may cause problems that can not enter the system.
In addition, if you are using a laptop, if the battery is about to run out during battery-powered sleep, the system will automatically save the memory data to the hard disk and then turn off the power and go to sleep. At the same time, if it reaches the sleep time in the power plan, it will also enter the sleep state. Therefore, in general, the laptop only needs to enable the sleep function. If you want to save power, you can set the time to go to sleep in the power management options, so that you can be sure of nothing.
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