CPU, or Central Processing Unit, is that component of a personal computer or a server which runs the calculations. Every single CPU runs at a certain speed and the higher it is, the swifter everything shall be processed, so when you host resource-demanding web programs on a hosting server, for instance, an effective processor shall allow them to be executed more quickly, which will drastically contribute to the entire user experience. The new generations of CPUs have two and more cores, each operating at a certain speed to ensure a superior and speedier performance. Such architecture allows the processor to handle different processes simultaneously or several cores to handle a single process if it requires extra computing power to be completed. Needless to say, other variables including the amount of RAM or the connection which a certain server uses can also affect the overall performance of the web sites hosted on it.