4GH hosting is used with a domain name and can be purchased at the same time but are two different products.
Also, to address Jackster1337: 4GH hosting stands for 4th Generation Hosting and not GHz. 4GH Hosting is our 4th Generation Hosting. When we say "webhosting in the cloud" it means that we have multiple servers working together behind a load balancer for our customers' sites. The end result is a hosting environment that has a cluster of servers that support the web services and then separate servers that support your databases, not just one server to handle all the load.
Note: I am not trying to be spammy, I just want to make sure you have correct information.