The hardware configuration of the hosting server where you host your websites is really important and can influence their performance. As a site includes also databases, logs, a Control Panel to manage the content, an e-mail service, etc, you need suitable hardware that will support these processes. A unit with a high CPU speed means that your web applications will be executed quicker, while more physical memory will enable additional system processes to run simultaneously, therefore the hardware shall have direct impact on how your Internet sites perform and in case the server is not powerful enough, they will function slowly or will not function at all. In this light, you need to check not only what characteristics a given hosting plan comes with, but also whether the hardware shall be adequate to support such functions.