If you host your sites on a dedicated hosting server, you would expect that they will perform ultra fast and that the access speed to them will depend only on the Internet connection of the site visitors. However, this is not going to be the case if the hosting server has bad network connectivity or relies on a network card, which simply cannot deal with high volume of traffic. If this is the situation, it shall take a while for your internet sites to load if many people open them at the same time or visitors might even see error messages. Because of this you could lose visitors as most probably many people will never revisit your internet site in the event that they have experienced issues or slow loading speeds. That is why you must pay attention to the network components of any new hosting machine which you acquire and not only to the main hardware such as CPU, Ram memory or hard drive.