In case you host your sites on a dedicated hosting server, you would expect that they shall perform super fast and that the access speed to them will depend solely on the Internet connection of the visitors. However, this won't be the case in case the server has bad network connectivity or relies on a network card, which simply can't deal with high volume of website traffic. If this is the case, it shall take quite a long time for your internet sites to load if many people open them at the same time or visitors could see error messages. As a result you could lose customers as most likely many people will never return to your website in the event that they have experienced issues or slow loading speeds. This is the reason why you must pay attention to the network components of any new hosting machine which you get and not only to the main hardware which includes CPU, RAM or hard disk drive.