Does Roamio and Mini have screensaver?

I am this close to purchasing a Roamio and mini to replace our DirecTV setup. I'm pretty nervous about doing so, as I've been with DirecTV since the original DirecTivos.

One thing I just thought of - does the Roamio and Mini have screensavers? How soon do they kick on? Is this configurable?

Having three plasmas, it would be a dealbreaker if there were no screensavers.

TIA!

Does Roamio and Mini have screensaver?