In the event that 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 solely on the Internet connection of the site visitors. However, this is not going to be the case in the event that the hosting machine has poor network connectivity or employs a network card, which simply just cannot deal with high volume of traffic. If this is the situation, it'll take a very long time for your websites to load if many people open them simultaneously or visitors might even see error messages. Because of that you could lose customers as almost certainly many people won't return to your site if they have experienced problems or slow loading speeds. This is why you need to pay attention to the network components of any new hosting server which you buy and not just to the main hardware such as Processor, Random access memory or hard disk.