CPU, or Central Processing Unit, is that part of a personal computer or a server that performs the calculations. Each CPU operates at a particular speed and the larger it is, the swifter everything shall be processed, so if you host resource-demanding web apps on a hosting server, for example, a fast processor shall allow them to be performed more quickly, which will drastically contribute to the overall user experience. The current generations of CPUs have 2 and more cores, each one operating at a certain speed to ensure a much better and swifter performance. This kind of architecture allows the processor to control a variety of processes simultaneously or several cores to address 1 process if it requires more computing power in order to be completed. Obviously, additional factors such as the amount of RAM or the connection which a particular server uses could also affect the overall performance of the web sites hosted on it.
