If you host your websites on a dedicated hosting machine, you would expect that they shall perform ultra fast and that the access speed to them shall depend entirely on the Internet connection of the website visitors. However, this won't be the case in case the hosting server has lousy network connectivity or uses a network card, which simply cannot deal with high volume of website traffic. If this is the case, it'll take a while for your internet sites to load if a lot of people open them at the same time or visitors could see error messages. Because of that you may lose customers as most likely many people will never return to your website if they have experienced difficulties or slow loading speeds. That's why you should pay attention to the network components of any new hosting machine that you purchase and not just to the main hardware which includes Processor, Random access memory or hard disk drive.