CPU, or Central Processing Unit, is that element of a personal computer or a server which performs all of the calculations. Every CPU functions at a particular speed and the bigger it is, the swifter everything will be processed, so when you host resource-demanding web applications on a hosting server, for example, a powerful processor will allow them to be performed faster, which will tremendously contribute to the whole user experience. The new generations of CPUs have 2 and more cores, each working at a specific speed to ensure a better and quicker performance. This kind of architecture makes it possible for the processor to handle a variety of processes all at once or several cores to manage one process if it needs additional computing power in order to be performed. Naturally, other factors like the amount of RAM or the connection that a given server uses can also affect the efficiency of the Internet sites hosted on it.