CPU, or Central Processing Unit, is that component of a personal computer or a server that runs each of the calculations. Each CPU functions at a particular speed and the higher it is, the quicker everything will be processed, so when you host resource-demanding web programs on a server, for instance, a quick processor shall enable them to be carried out more quickly, which will tremendously contribute to the entire user experience. The current generations of CPUs have 2 and more cores, each of them running at a particular speed to guarantee a superior and swifter performance. This kind of architecture permits the processor to handle different processes at one time or a number of cores to address a single process if it requires extra computing power in order to be completed. However, other factors such as the amount of RAM or the connection a particular web server uses may also affect the efficiency of the sites hosted on it.