CPU, or Central Processing Unit, is that element of a personal computer or a hosting server that executes the calculations. Each and every CPU runs at a particular speed and the higher it is, the swifter everything shall be processed, so if you host resource-demanding web programs on a hosting server, for instance, a powerful processor will allow them to be carried out faster, which will tremendously contribute to the whole user experience. The more recent generations of CPUs have two and more cores, each of them operating at a particular speed to guarantee a superior and faster performance. This type of architecture allows the processor to handle different processes at one time or several cores to address 1 process if it needs additional computing power to be carried out. Of course, other variables including the amount of RAM or the connection a given web server uses can also affect the efficiency of the web sites hosted on it.