CPU, which is frequently called just "processor", is an abbreviation for Central Processing Unit. That's the core of each computer or server, since it runs all of the calculations and logical input/output functions. Though the performance of an Internet site or an application relies upon other things as well, such as the amount of physical memory or the online connectivity of the server, the pace at which a certain processor works determines how quick an application shall be executed. Later-generation processors have a number of cores that can drastically increase their overall power and efficiency, due to the fact that every single core can take care of numerous processes separately or a few cores can take care of one process which requires a significant computing power. Due to the fact that every single core runs at a certain speed, this architecture can be viewed as numerous individual processors working together.