What is the difference between Hibernation and Sleep in Windows?
Sleep mode is a power saving feature, which is similar to pausing your playlist but it enters power saving mode as well. Essentially all your open stuff resides in RAM and your Power Hungry Processor goes on to take a nap. You might know that RAM is a volatile memory and all the stuff stored on it vanishes as soon as the power is out. Therefore, the power is not completely turned off in Sleep Mode.
Hibernate mode is very similar to sleep, but instead of saving in RAM, it saves the current running applications in the hard disk. This means that your computer can now turn off completely. Zero Power Consumption.. Yippee!
And when the computer is turned back on, it basically copies back your stuff from Hard Disk to RAM.. although that might take a bit longer than Sleep mode.. but who cares if you have an SSD.