If you host your websites on a dedicated hosting machine, you would expect that they shall perform very 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 in the event that the hosting machine has bad network connectivity or uses a network card, which just cannot handle high volume of traffic. If this is the case, it'll take a very long time for your websites to load if lots of people open them simultaneously or visitors may see error messages. Thus you might lose website visitors as probably many people will not revisit your internet site in case they have experienced difficulties or slow loading speeds. This is why you should pay attention to the network components of any new hosting machine which you buy and not only to the main hardware such as CPU, Ram memory or hard disk.