CPU, or Central Processing Unit, is that element of a computer system or a web server which runs each of the calculations. Each and every CPU runs at a certain speed and the bigger it is, the swifter everything will be processed, so in case you host resource-demanding web applications on a hosting server, for example, a quick processor shall allow them to be performed quicker, which will tremendously contribute to the whole user experience. The new generations of CPUs have two and more cores, each of them operating at a specific speed to guarantee a better and quicker performance. This kind of architecture allows the processor to handle various processes at one time or several cores to manage one process if it needs more computing power to be performed. Needless to say, other elements including the amount of RAM or the connection a specific hosting server uses may also affect the performance of the websites hosted on it.