CPU, or Central Processing Unit, is that component of a personal computer or a hosting server that performs all the calculations. Each CPU functions at a certain speed and the higher it is, the faster everything shall be processed, so when you host resource-demanding web applications on a hosting server, for instance, a quick processor will allow them to be performed quicker, which will considerably contribute to the entire user experience. The current generations of CPUs have 2 and more cores, each operating at a particular speed to ensure a better and speedier performance. This kind of architecture allows the processor to manage numerous processes simultaneously or a number of cores to control one process if it needs extra computing power to be executed. Needless to say, other factors such as the amount of RAM or the connection that a certain hosting server uses may also affect the overall performance of the Internet sites hosted on it.