In case you host your internet sites on a dedicated hosting server, you would expect that they will perform extremely fast and that the access speed to them shall depend solely on the Internet connection of the site visitors. Having said that, this won't be the case in case the hosting server has lousy network connectivity or relies on a network card, which simply can't deal with high volume of traffic. If this is the situation, it will take a very long time for your sites to load if lots of people open them simultaneously or visitors may see error messages. Because of this you might lose website visitors as most likely many people will never revisit your website if they have experienced issues or slow loading speeds. This is why you need to pay attention to the network components of any new hosting machine you buy and not only to the main hardware which includes Central processing unit, RAM or hard disk.