Both should be enough for good performance, but if you're looking for the best bang for the buck, you will need to fill me in a little. What ROG model are you considering? I ask that beause some ROG models are up gradable (ie. cpu, gpu, ram, etc.). For me that is a big thumbs up, as in the past I have had to buy a new laptop to keep up with games, but i'm not sure of your level of excitement for this factor.
Please fill me in.....
-taigadog03
Update: With the y50 you get a $200 intel software bundle, if you are intrested. Here's the
link. Check the y50 page on newegg and it will show the bundle. It's free of course