CPU, or Central Processing Unit, is that part of a computer system or a hosting server which runs all the calculations. Each CPU functions at a particular speed and the higher it is, the swifter everything will be processed, so when you host resource-demanding web apps on a hosting server, for example, an effective processor will enable them to be performed more quickly, which will significantly contribute to the overall user experience. The newer generations of CPUs have 2 and more cores, each one functioning at a particular speed to ensure a better and faster performance. Such architecture enables the processor to control numerous processes at one time or several cores to handle a single process if it needs extra computing power to be carried out. Of course, other factors such as the amount of RAM or the connection which a given hosting server uses may also affect the efficiency of the Internet sites hosted on it.