In case you host your sites on a dedicated server, you would expect that they shall perform ultra fast and that the access speed to them will depend entirely on the Internet connection of the website visitors. Having said that, this won't be the case in the event that the hosting server has poor network connectivity or uses a network card, which just cannot deal with high volume of traffic. If this is the situation, it shall take a while for your internet sites to load if lots of people open them simultaneously or visitors might even see error messages. As a result you may lose visitors as in all probability many people will not return to your website in case they have experienced problems 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 just to the main hardware which includes Central processing unit, RAM or hard disk.