The quality of the hosting service that you will get for your sites depends not only on the characteristics which a given plan has, but also on the hardware your web applications work on. Increased CPU speeds, for instance, suggest that the processes running on the web server will be carried out faster, while additional physical memory (RAM) indicates that even more processes can run together. The grade of the hardware may also have an effect on the general performance and dependability of the server. Because the web hosting service nowadays includes not just file storage, but also databases, email messages, logs, etc, extra processing power is needed to run all system processes and to make sure that they work efficiently and with no lag. In case the hardware is not powerful enough, the result will be sluggish sites and even service timeouts since the machine might not be able to take care of all requests to the websites hosted on it.