CPU, or Central Processing Unit, is that part of a personal computer or a server that executes each of the calculations. Every CPU operates at a particular speed and the bigger it is, the swifter everything shall be processed, so in case you host resource-demanding web applications on a hosting server, for instance, a powerful processor shall enable them to be performed speedier, which will significantly contribute to the whole user experience. The modern generations of CPUs have 2 and more cores, each of them functioning at a particular speed to ensure a superior and swifter performance. This kind of architecture enables the processor to manage numerous processes concurrently or several cores to manage one process if it needs more computing power in order to be carried out. Naturally, other factors such as the amount of RAM or the connection a certain web server uses may also affect the efficiency of the Internet sites hosted on it.