If you host your internet sites on a dedicated hosting machine, you would expect that they shall perform very fast and that the access speed to them shall depend solely on the Internet connection of the website visitors. Having said that, this won't be the case if the hosting machine has lousy network connectivity or employs a network card, which just cannot deal with high volume of traffic. If this is the situation, it will take a long time for your websites to load if lots of people open them at the same time or visitors may see error messages. Because of this you may lose website visitors as most probably many people will not revisit your site if they have experienced difficulties or slow loading speeds. This is the reason why you should pay attention to the network components of any new hosting machine which you get and not just to the main hardware which includes CPU, Random access memory or hard drive.