CPU, or Central Processing Unit, is that element of a home PC or a server which runs the calculations. Each and every CPU operates at a certain speed and the larger it is, the sooner everything shall be processed, so if you host resource-demanding web applications on a hosting server, for example, a fast processor shall enable them to be performed much faster, which will tremendously contribute to the entire user experience. The new generations of CPUs have 2 and more cores, each running at a certain speed to guarantee a better and swifter performance. This type of architecture makes it possible for the processor to manage a variety of processes simultaneously or several cores to handle 1 process if it requires more computing power in order to be performed. Of course, additional factors including the amount of RAM or the connection that a particular hosting server uses could also affect the efficiency of the web sites hosted on it.