If you host your internet sites on a dedicated hosting server, you would expect that they'll perform ultra fast and that the access speed to them will depend only on the Internet connection of the website visitors. Having said that, this won't be the case if the hosting server has bad network connectivity or relies on a network card, which just can't handle high volume of traffic. If this is the case, it'll take quite a long time for your websites to load if many people open them at the same time or visitors may see error messages. Thus you may lose customers as probably many people won't return to your site in the event that they have experienced issues or slow loading speeds. That's why you must pay attention to the network components of any new hosting machine that you buy and not only to the main hardware which includes CPU, Ram memory or hard drive.