CPU, or Central Processing Unit, is that element of a computer or a web server which executes all the calculations. Each and every CPU operates at a particular speed and the higher it is, the quicker everything will be processed, so if you host resource-demanding web programs on a hosting server, for instance, an effective processor will enable them to be carried out quicker, which will considerably contribute to the whole user experience. The modern generations of CPUs have 2 and more cores, each running at a particular speed to guarantee a much better and swifter performance. This type of architecture makes it possible for the processor to control different processes all at once or several cores to control 1 process if it needs additional computing power to be performed. However, other elements such as the amount of RAM or the connection which a specific hosting server uses can also affect the overall performance of the Internet sites hosted on it.