I think buying a computer must go with latest edition like i5 or i7 generation and 2 gb graphics is suffecient for piwer user.Ram should be 8gb for playing high games.Brabd plays very important role must go with reputed vrand like asus, acer, samsung etc.1 tb memory is sufficient for big games.Most of us goes with brand and not with features and I think must gi with features and brand.