CPU, that's frequently called just "processor", is an abbreviation for Central Processing Unit. That's the core of each and every personal computer or web server, due to the fact that it carries out all of the calculations and logical input/output procedures. Though the performance of an Internet site or an application depends on other things as well, such as the amount of physical memory or the online connectivity of the hosting server, the pace at which a given processor operates determines how quickly an app shall be executed. Later-generation processors have several cores that can severely improve their overall power and efficiency, since each core can take on a variety of processes individually or several cores can deal with 1 process that requires a considerable processing power. Since every core runs at a specific speed, this architecture can be looked at as a number of individual processors working together.