CPU, or Central Processing Unit, is that element of a home PC or a server that carries out all the calculations. Each and every CPU runs at a particular speed and the higher it is, the speedier everything will be processed, so in case you host resource-demanding web programs on a server, for instance, a fast processor will allow them to be carried out quicker, which will drastically contribute to the overall user experience. The more recent generations of CPUs have two and more cores, each one working at a specific speed to guarantee a much better and swifter performance. This kind of architecture allows the processor to handle a variety of processes at one time or several cores to address 1 process if it requires extra computing power in order to be carried out. Naturally, other factors including the amount of RAM or the connection that a particular web server uses could also affect the efficiency of the sites hosted on it.