CPU, or Central Processing Unit, is that component of a PC or a server which runs the calculations. Each and every CPU operates at a particular speed and the larger it is, the speedier everything will be processed, so when you host resource-demanding web programs on a server, for instance, a quick processor shall allow them to be performed faster, which will drastically contribute to the entire user experience. The new generations of CPUs have 2 and more cores, each of them running at a particular speed to ensure a better and swifter performance. This kind of architecture permits the processor to control different processes simultaneously or a number of cores to handle 1 process if it requires additional computing power in order to be carried out. Naturally, other variables like the amount of RAM or the connection a specific server uses may also affect the overall performance of the websites hosted on it.