In case you host your websites on a dedicated hosting machine, you would expect that they will perform ultra fast and that the access speed to them will depend entirely on the Internet connection of the visitors. However, this won't be the case if the hosting machine has lousy network connectivity or employs a network card, which simply cannot handle high volume of site traffic. If this is the case, it'll take a while for your websites to load if lots of people open them at the same time or visitors might even see error messages. Therefore you could lose visitors as most probably many people won't revisit your website in the event that they have experienced difficulties or slow loading speeds. This is why you ought to pay attention to the network components of any new hosting server which you acquire and not just to the main hardware such as Central processing unit, RAM or hard disk.