What is the Difference Between Turning Off My Computer and Setting it to Hibernate?

Computer hibernation is to temporarily save the data in the memory to the hard disk, and then cut off the power of the memory. When you need to wake up the machine from hibernation, generally you only need to press the power switch, and some machines can also wake up by pressing any key on the keyboard. The wake-up time is generally about 30 to 40 seconds.