Many people say they use Hibernate instead of Sleep mode because Hibernate draws no power. Unfortunately, when it comes to desktop PCs, they're wrong. Desktop PCs still use some power even while they're shut down. Laptops generally don't use any power while shut down or hibernating, as that would cause unnecessary battery drain. Desktop computers don't have to worry about batteries, so they're generally a bit more power-hungry. Sleep, Hibernate, and Shut Down Defined RELATED: What's the Difference Between Sleep and Hibernate in Windows? When you use Sleep mode, your computer continues providing power to its RAM. The RAM contains your computer's working memory and requires constant power or it will forget its contents. Sleep mode continues providing this power, allowing a