What is the difference between hibernation and sleep on a laptop

Sleep actually means standby.

The difference between standby and hibernation.

1. Standby" power management mode.

Standby mode is primarily used to save power, and it allows you to get back to work without having to restart your computer. Standby mode shuts down monitors, hard drives, fans, and other devices to keep the entire system in a low-energy state. When you reuse your computer, it quickly exits standby mode, and your desktop, including open documents and programs, returns exactly to the state it was in when it was waiting.

To get rid of the wait and get back to using your computer, move your mouse or press any key on your keyboard, or press the power button on your computer with a quick click.

Please note! Unlike the "hibernation mode" described below, standby mode does not store unsaved information on the hard disk, which is only stored in the computer's memory. This information will be lost if there is a sudden power outage during the period.

Therefore, you should save the file before putting your computer into standby mode. If you want to automatically save your work when you're away from your computer, you can use hibernation mode instead of standby mode. However, sleep mode will shut down the computer.

2."Hibernated".

Power management mode.

When you use hibernate mode, you can turn off your computer and be confident that when you come back, all your work, including programs and documents that you haven't had time to save or close, will be completely and exactly back to the state you left off. The contents of the memory are saved on disk, and the monitor and hard disk are turned off, which also saves power and reduces the wear and tear of the computer. In general, it takes longer to get a computer out of sleep than it does for it to wait, but it consumes less power.

If you are constantly interrupted at work, such as some secretarial professions that often have to answer questions while doing computer processing**, etc., you can consider setting your computer to go into automatic sleep mode after a specified number of minutes. Sleep mode saves everything in memory to the hard drive, turns off the monitor and hard drive, and then shuts down the computer.

To wake up again on standby, just click on the book.

fn" key.

If you are sleeping, it will take up a lot of hard disk space, and if you don't actually need it, it is recommended to turn off this feature.

Hibernation is to save the current data in the hard drive, and the machine will stop powering completely. Because data is stored on the hard drive, which is much slower than memory, it is relatively slow to go to sleep and wake up for about 25 seconds. In this way, the data will not be lost in the power failure.

Sleep is the data stored in the memory, the storage speed is fast, the time is relatively short, you can enter sleep for about 5 to 8 seconds, and the data will disappear after the power is off.

The difference between sleep and hibernation in a laptop is that sleep is no different from shutting down, except that some information is permanently in memory. Hibernation is the temporary shutdown of the display to allow the operating system to standby.

When sleeping, the power is still in the memory and all data is maintained. At this point, the power consumption is very low, and recovery can be carried out quickly.

When sleeping, the data is also saved, but it has been saved to the hard disk, and the power can be cut off, which is equivalent to shutting down, but when it is restored, it can be restored to the working state before sleep.

1. Different definitions.

Theoretically, the computer does not have a "sleep" function at all, only a "sleep" function, and its main role is to control the computer into a state similar to "human sleep", which will keep the computer in a "power-saving" state, but in a state that can be woken up at any time. "Hibernation" is usually used to refer to the state of the screen, which is generally divided into three states, namely on, off, and hibernation, similar to the sleep function of the computer, it can make the screen enter the "power saving" state alone, but it is in a state that can be woken up at any time.

Second, the control equipment is different.

The "sleep" function of the computer can control the computer case and the system to enter the "sleep" state, which also includes the display screen, but it does not directly control the computer display, but through the core processor (CPU), hard disk, memory, graphics card and other control systems to enter the sleep state, it is the system that enters the sleep state, and also includes all the components in the computer case; The so-called "hibernation" state is different, it can only control the display and screen, and it cannot control the rest of the devices.

Third, the effect of feedback is different.

When the computer enters the "sleep" state, the state of the computer will change, switching from the running state to the lowest power state, and some computers with higher performance will stop turning when they are asleepThe screen "sleep" is different, we can understand it as "turn off the monitor", the computer itself still maintains a normal state, hibernation can not control the operation of the computer case, let alone interfere with the operation of the computer system.

""Sleep" is an energy-saving state that allows your computer to quickly resume working at full power (usually within seconds) when you want to start working again. Putting your computer to sleep is like pausing *** Announcer: it immediately stops the current operation and is ready to restart when you want to continue working.

"Hibernation" is a power-saving state designed primarily for laptops. Sleep usually saves work and settings in memory and consumes a small amount of power, while sleep saves open documents and programs to the hard drive and then shuts down the computer. Of all the energy-saving states used by Windows, hibernation uses the least amount of power.

In the case of laptops, if you know that you will not use it for a long time and it is not possible to charge the battery during that time, you should use the sleep mode.

1. The location and wake-up mode of saving data are different, when the computer is asleep, it means that the open documents and programs are saved to a file in the hard disk, and when the computer is awakened, the data is read from this file and loaded into the physical memory. Since the file written in memory when the computer is hibernate is a disk file, it is much faster and more efficient to read it than to access the corresponding disk normally. At the same time, even if the power is off when the computer is asleep, it will not affect the data that has been saved.

When the computer is asleep, all work can still be carried out normally when the computer is woken up again. Just click on the boot button and you will be able to enter the recovery process in no time.

When the computer is asleep, all the data in the working state of the computer is saved in the corresponding memory. When you need to wake up, you only need to press the mouse or keyboard to quickly recover.

Since the computer is asleep and does not save all the states of the computer desktop, if the computer is powered off in the sleep state, the data information that is not saved will be lost. Therefore, it is good to save the document while the computer system is asleep.

2. The length of time away from the computer is different, the computer is hibernated: usually when we have other things that need to leave the computer for a long time, we still want to continue to use the computer when we come back. However, if you don't want to do anything with the files you are using, you can put your computer to sleep.

After the computer is in a dormant state, all computer accessories will not be powered on, and the power consumption is small, if you do not use the computer for a long time, you can choose to put it in a sleep state.

Sleep state: If you leave the computer for a short time, you can put it to sleep, so that you can save power consumption and resume work quickly.

1. The file storage status is different: when the computer is in sleep and then recovered, the system will read the file content into the memory, and the file content will not be lost, and if the power is suddenly cut off in sleep mode, the unsaved information will be lost. So save the document before using sleep mode.

2. Different release states: if it is in sleep mode, the desktop can usually be woken up by shaking the mouse or keyboard; If it is in hibernation, you will need to tap the power button once to enable the computer.

3. Different usage: If you leave the computer for a short time, you should use the sleep function, which can not only save power but also quickly restore the working state. If you are away from the computer for a long time, it is better to choose sleep mode to save power.