Just brought this Laptop not very long ago because I chance of getting it for good price,there are various models of the r780 with slightly different specs,
my one is not one of the top of the range but still has very high specs.
My one does not a have blue ray player which you can get on the higher models.
but it does have a nvidia geforce 330m graphics card that is pretty good,and a intel core i processor,+500gb hard drive,higher models have 640gh,it would seem,but that is still more than enough for me.
The screen is amazing very good for watching movies and playing games,and I have to say the sound is just as amazing the best I have ever heard on a laptop,batter life is not huge,but you can get about 3 hours out of it.
But I only intend to use it on the mains.
I have to admit I am a bit of a Samsung fan as I also have Samsung netbook that is very good and a Samsung fridge,everything they do seem to made very well and this no exception.
Though I have not had this laptop very long I would say it is an exceptional laptop very fast very powerfull,great for someone that wants a very good desktop replacement that can handle all your multimedia needs,that does not want to carry it around with you every day.
In short it is a very good large laptop that is at an affordable price.

very plessed with it.