CPU, or Central Processing Unit, is that element of a home PC or a web server which carries out each of the calculations. Every CPU operates at a certain speed and the bigger it is, the quicker everything will be processed, so when you host resource-demanding web apps on a hosting server, for instance, a powerful processor shall allow them to be carried out quicker, which will drastically contribute to the whole user experience. The new generations of CPUs have two and more cores, each one operating at a certain speed to ensure a superior and speedier performance. This type of architecture enables the processor to manage various processes at one time or several cores to control one process if it requires additional computing power in order to be executed. Needless to say, additional factors including the amount of RAM or the connection that a given hosting server uses may also affect the efficiency of the websites hosted on it.