CPU, or Central Processing Unit, is that component of a personal computer or a server which runs all of the calculations. Every single CPU runs at a specific speed and the bigger it is, the faster everything will be processed, so in case you host resource-demanding web applications on a hosting server, for instance, an effective processor shall enable them to be executed quicker, which will greatly contribute to the whole user experience. The newer generations of CPUs have two and more cores, each one working at a specific speed to guarantee a much better and quicker performance. Such architecture enables the processor to control a variety of processes concurrently or several cores to manage a single process if it requires additional computing power in order to be performed. However, other factors like the amount of RAM or the connection a particular hosting server uses can also affect the overall performance of the sites hosted on it.