In the event that you host your websites on a dedicated server, you would expect that they will perform very fast and that the access speed to them will depend exclusively on the Internet connection of the website visitors. Having said that, this won't be the case in case the hosting server has lousy network connectivity or uses a network card, which just can't deal with high volume of traffic. If this is the situation, it'll take a long time for your internet sites to load if many people open them at the same time or visitors might even see error messages. Because of that you may lose website visitors as most likely many people will not return to your site if they have experienced issues or slow loading speeds. This is why you must pay attention to the network components of any new hosting machine you purchase and not only to the main hardware which includes Processor, Ram memory or hard disk.