CPU, that is oftentimes called just "processor", is an abbreviation for Central Processing Unit. That is the core of any PC or hosting server, due to the fact that it performs all of the calculations and logical input/output procedures. Although the performance of a site or an application relies upon other things as well, like the amount of physical memory or the connectivity of the hosting server, the rate at which a specific processor operates determines how quickly an application will be executed. Later-generation processors have numerous cores that can significantly increase their overall power and efficiency, since each and every core can take care of numerous processes separately or several cores can take on one process that needs a considerable processing power. Due to the fact that every single core functions at a specific speed, this architecture can be seen as several independent processors cooperating.