If you host your internet sites on a dedicated hosting server, you would expect that they'll perform extremely fast and that the access speed to them shall depend only on the Internet connection of the visitors. However, this will not be the case in case the server has bad network connectivity or relies on a network card, which simply just cannot cope with high volume of website traffic. If this is the situation, it shall take a long time for your websites to load if many people open them concurrently or visitors might even see error messages. Because of that you might lose visitors as most probably many people will not return to your internet site in case they have experienced difficulties or slow loading speeds. That's why you ought to pay attention to the network components of any new hosting machine you buy and not just to the main hardware which includes CPU, Random access memory or hard drive.