CPU, that is often called just "processor", is an abbreviation for Central Processing Unit. This is the core of every laptop or computer or hosting server, due to the fact that it runs all of the calculations and logical input/output operations. Though the performance of an Internet site or an app relies on other things also, like the amount of physical memory or the connectivity of the web server, the rate at which a certain processor works determines how soon an app will be executed. Later-generation processors have numerous cores that can severely boost their overall power and efficiency, due to the fact that every single core can take care of a variety of processes separately or several cores can control a single process which requires a substantial computing power. Since each and every core functions at a particular speed, this architecture can be seen as a few separate processors cooperating.