CPU, that's oftentimes called just "processor", is an abbreviation for Central Processing Unit. This is the core of any personal computer or hosting server, due to the fact that it carries out each of 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 connectivity of the hosting server, the rate at which a particular processor works determines how quickly an application will be executed. Later-generation processors have numerous cores that can seriously improve their overall power and efficiency, because each core can handle several processes separately or several cores can take on 1 process that needs a substantial computing power. Because each and every core works at a particular speed, this architecture can be looked at as several independent processors cooperating.