CPU, or Central Processing Unit, is that element of a home PC or a web server that carries out all of the calculations. Each and every CPU runs at a specific speed and the bigger it is, the sooner everything will be processed, so when you host resource-demanding web programs on a server, for example, an effective processor will allow them to be carried out speedier, which will drastically contribute to the whole user experience. The modern generations of CPUs have two and more cores, each of them operating at a specific speed to guarantee a superior and swifter performance. Such architecture permits the processor to handle different processes simultaneously or a number of cores to control one process if it requires extra computing power to be completed. Naturally, other variables including the amount of RAM or the connection which a given server uses could also affect the overall performance of the websites hosted on it.