CPU, or Central Processing Unit, is that component of a computer or a web server which executes each of the calculations. Every single CPU functions at a particular speed and the higher it is, the swifter everything shall be processed, so if you host resource-demanding web applications on a hosting server, for example, an effective processor shall allow them to be performed much faster, which will tremendously contribute to the entire user experience. The more recent generations of CPUs have two and more cores, each of them functioning at a specific speed to guarantee a superior and faster performance. This type of architecture permits the processor to manage a variety of processes all at once or a number of cores to control a single process if it requires extra computing power to be carried out. Of course, other elements like the amount of RAM or the connection that a specific server uses may also affect the performance of the web sites hosted on it.