CPU, or Central Processing Unit, is that element of a computer system or a hosting server which executes all the calculations. Every single CPU operates at a certain speed and the larger it is, the sooner everything shall be processed, so when you host resource-demanding web programs on a hosting server, for example, an effective processor will allow them to be performed much faster, which will greatly contribute to the overall user experience. The modern generations of CPUs have two and more cores, each of them operating at a specific speed to ensure a better and swifter performance. This sort of architecture enables the processor to control different processes simultaneously or several cores to handle 1 process if it needs more computing power to be performed. Of course, other elements including the amount of RAM or the connection a certain server uses can also affect the efficiency of the web sites hosted on it.