Re: Should i upgrade RAM? (from 4gb to 6gb)
4GB has been the standard for sometime now. Toms Hardware did an article recently about this subject. For gaming, I believe you can see an increase in performance in numbers, but not necessarily a drastic increase in frame rate. You're better off putting that extra cash into your video card instead of more than 4GB of RAM. Now if you were gaming at 1920x1080 or higher, rocking that CPU overclocked, and a better video card, then I'd look into getting more RAM. But as for right now with your current configuration, that money is better put into your video card.
All of this is based on the assumption you're using this for gaming.
Back on being mobile - ASUS G551- 15.3" 1080p - Core i7 4710HQ - GTX 860M - 16GB DDR3 1600 - 512GB Samsung 850 Pro - Steam ID: TheOtis