The r4 to be fair was the second laptop that I have owned that i felt really was not a compromise for games at all, I quite happily played stuff for hours on it and didnt find a single game that I wasnt able to max out quite happily.
Ive had tons of gaming laptops going back to the Dell XPS M1710 which was the only other one that left me feeling that, in terms of quality and performance, everything in between while probably okay for most people, to someone niggly like me was not good enough.
Also when you think with this new steam, dell are asking £1000 for a lesser specced mini itx machine when not much more will get you a full laptop on the outlet that would be more discreet, quieter and let you do whatever you want with it.