CPU, or Central Processing Unit, is that component of a home PC or a server which runs all of the calculations. Each and every CPU operates at a specific speed and the higher it is, the quicker everything shall be processed, so if you host resource-demanding web programs on a web server, for instance, a quick processor will enable them to be executed speedier, which will greatly contribute to the entire user experience. The current generations of CPUs have 2 and more cores, each one operating at a particular speed to guarantee a better and swifter performance. This sort of architecture allows the processor to handle various processes all at once or several cores to manage one process if it requires extra computing power in order to be carried out. Obviously, additional factors such as the amount of RAM or the connection that a specific web server uses may also affect the performance of the sites hosted on it.