CPU, which is oftentimes called just "processor", is an abbreviation for Central Processing Unit. This is the core of each computer or server, because it carries out all the calculations and logical input/output functions. Despite the fact that that the performance of an Internet site or an application depends on other things also, including the amount of physical memory or the connection of the server, the speed at which a certain processor operates determines how soon an application will be executed. Later-generation processors have numerous cores which can considerably boost their overall power and efficiency, due to the fact that each and every core can control several processes independently or several cores can take on one process that needs a sizeable computing power. Since every core functions at a certain speed, this architecture can be looked at as a few individual processors working together.