Depends on what you consider full HD. Sure, if you're getting something from a streaming site you'll be lucky to get 5 GB/hr. But from a high quality source lik

Depends on what you consider full HD. Sure, if you're getting something from a streaming site you'll be lucky to get 5 GB/hr. But from a high quality source like a Bluray I would say 6 GB / hr is about the absolute minimum (for a crappy old transfer), and over 15 GB / hr would not be unheard of.