It is much better to use the Dell XPS 15 L502 NOTEBOOKS I use 18 hours as a result, but it does not increase the temperature motherboard. It’s much better when it comes to speed, not slow. keyboard much like it, like a lot of work. But many soft mouse pad used in many laptop Dell XPS 15 L502. Great NOTEBOOKS, super performance. If you need something to use primarily at home, it will be great. I needed to buy another NOTEBOOKS, smaller and lighter to carry around, because this one is quite heavy. Did the research prior to purchase. Two weeks in so far so good, exactly as expected and very happy? Not to much bloatware to remove but the laptop is lightening quick. The graphics good but the sound really is excellent. No issues with build quality or battery life.