Asus R558uq is the most bad laptop that I have bought 7 month ago.At first time I am also impressed from asus r558uq with its specification , though it have powerfull hardware at paper but its not like that it gives same performance as on paper.Look wise it does not catches our eye at first glance. After some usages its performance become slower, it takes lots of time to start and takes more time than usual processing.It posses 4 gb of ddr4 ram , and I personally upgraded it to total 12gb of ram at time of purchase , though I upgraded laptop with 12gb of ram but it cannot upstand with that peeformance level.Backlight key are absent , you may face very unconvinent at the time of night. One can not simply keyboard at night.Battery backup maximum 3hr while watching movie and it stand onley 2 hr while using internet.General specificationRam 4gb ddr41 TB hard discFull hd displayIntel i5 , 7 gen.N vidia 940mx graphicSo personally I insist those who are looking for assus r558uq , Dont buy it .