CPU, or Central Processing Unit, is that part of a personal computer or a server which executes all of the calculations. Each CPU operates at a specific speed and the bigger it is, the speedier everything will be processed, so in case you host resource-demanding web programs on a web server, for instance, a quick processor shall enable them to be executed speedier, which will tremendously contribute to the overall user experience. The current generations of CPUs have 2 and more cores, each functioning at a particular speed to guarantee a superior and quicker performance. This sort of architecture makes it possible for the processor to manage numerous processes all at once or several cores to manage 1 process if it needs extra computing power in order to be performed. Naturally, other factors such as the amount of RAM or the connection a certain hosting server uses may also affect the overall performance of the websites hosted on it.