If you host your internet sites on a dedicated hosting server, you would expect that they'll perform lightning fast and that the access speed to them will depend entirely on the Internet connection of the website visitors. Having said that, this is not going to be the case if the hosting server has lousy network connectivity or uses a network card, which simply just cannot cope with high volume of website traffic. If this is the situation, it will take a while for your sites to load if a lot of people open them concurrently or visitors could see error messages. Because of that you might lose website visitors as most likely many people won't return to your site if they have experienced issues or slow loading speeds. That's why you ought to pay attention to the network components of any new server you acquire and not just to the main hardware like CPU, Ram memory or hard disk.