How quickly an internet site shall open would depend not just on the Internet connection of the customer, but also on the connectivity of the server where the internet site is hosted and on the network infrastructure - routers, server network card, etc. Slow connection or hardware which is unable to cope with a high volume of inbound and outbound traffic may have direct impact on the user experience of your customers and the overall performance of your site since people shall most probably see error messages that the site isn't available or it will take a very long time for your content to load. In the event that this sort of a thing happens, it is unlikely that the visitors will return to the website. For that reason you ought to always check the connectivity of any server that you purchase and not just the main hardware components such as hard drive, processor and physical memory.