CPU, or Central Processing Unit, is that element of a personal computer or a web server that performs each of the calculations. Each and every CPU runs at a particular speed and the higher it is, the speedier everything will be processed, so if you host resource-demanding web applications on a web server, for example, a powerful processor will enable them to be executed more quickly, which will tremendously contribute to the entire user experience. The current generations of CPUs have 2 and more cores, each working at a specific speed to ensure a much better and faster performance. This sort of architecture allows the processor to manage numerous processes all at once or a number of cores to manage a single process if it needs more computing power in order to be completed. Needless to say, other factors including the amount of RAM or the connection that a certain web server uses can also affect the efficiency of the websites hosted on it.