In case you host your websites on a dedicated hosting machine, you would expect that they'll perform ultra fast and that the access speed to them will depend exclusively on the Internet connection of the site visitors. Nevertheless, this is not going to be the case if the hosting machine has bad network connectivity or employs a network card, which just can't cope with high volume of website traffic. If this is the case, it'll take quite a long time for your websites to load if lots of people open them simultaneously or visitors might even see error messages. Because of this you might lose site visitors as almost certainly many people won't revisit your site in case they have experienced problems or slow loading speeds. That's why you must pay attention to the network components of any new hosting server that you purchase and not only to the main hardware which includes Processor, Ram memory or hard disk.