CPU, or Central Processing Unit, is that element of a home PC or a hosting server that executes all the calculations. Every CPU operates at a specific speed and the larger it is, the faster everything shall be processed, so in case you host resource-demanding web applications on a hosting server, for example, a quick processor shall allow them to be carried out much faster, which will considerably contribute to the entire user experience. The more recent generations of CPUs have two and more cores, each one operating at a particular speed to guarantee a superior and faster performance. This kind of architecture makes it possible for the processor to control numerous processes simultaneously or several cores to manage a single process if it requires additional computing power in order to be executed. Naturally, other factors such as the amount of RAM or the connection that a given web server uses could also affect the performance of the Internet sites hosted on it.