If you host your websites on a dedicated hosting server, you would expect that they'll perform extremely fast and that the access speed to them will depend entirely on the Internet connection of the site visitors. Having said that, this will not be the case in case the server has lousy network connectivity or uses a network card, which just can't handle high volume of site traffic. If this is the case, it'll take a while for your sites to load if lots of people open them concurrently or visitors could see error messages. Therefore you might lose website visitors as in all probability many people will not revisit your website if they have experienced problems or slow loading speeds. This is why you ought to pay attention to the network components of any new hosting server that you acquire and not only to the main hardware such as CPU, RAM or hard disk drive.