CPU, or Central Processing Unit, is that part of a computer system or a web server that performs all the calculations. Each CPU functions at a specific speed and the larger it is, the sooner everything will be processed, so in case you host resource-demanding web programs on a server, for instance, a quick processor shall enable them to be performed speedier, which will tremendously contribute to the entire user experience. The newer generations of CPUs have 2 and more cores, each of them running at a particular speed to ensure a much better and quicker performance. Such architecture permits the processor to control a variety of processes simultaneously or several cores to address a single process if it needs additional computing power in order to be performed. Obviously, other factors including the amount of RAM or the connection a specific server uses could also affect the efficiency of the sites hosted on it.