CPU, or Central Processing Unit, is that component of a computer or a server that runs all of the calculations. Every single CPU operates at a specific speed and the larger it is, the sooner everything shall be processed, so in case you host resource-demanding web applications on a server, for instance, a quick processor shall allow them to be carried out quicker, which will greatly contribute to the overall user experience. The newer generations of CPUs have 2 and more cores, each functioning at a specific speed to ensure a much better and speedier performance. This kind of architecture enables the processor to manage different processes all at once or a number of cores to address one process if it needs extra computing power to be carried out. Needless to say, additional factors like the amount of RAM or the connection that a specific server uses could also affect the overall performance of the Internet sites hosted on it.