CPU, or Central Processing Unit, is that part of a computer or a server that carries out the calculations. Every CPU runs at a specific speed and the larger it is, the quicker everything will be processed, so if you host resource-demanding web applications on a hosting server, for example, an effective processor will enable them to be carried out much faster, which will considerably contribute to the overall user experience. The newer generations of CPUs have 2 and more cores, each of them operating at a specific speed to guarantee a much better and speedier performance. This sort of architecture permits the processor to manage numerous processes all at once or a number of cores to control a single process if it needs extra computing power to be executed. Needless to say, other elements like the amount of RAM or the connection a given hosting server uses can also affect the efficiency of the web sites hosted on it.