I have using lenovo z50 70 since 7 to 8 months. And I found this product not worth the money. The battery backup is not that much good. It takes almost 5 to 6 hours to complete the charging. It has 2 gb nvidia geforce graphics card. Instead of having graphics card the picture quality is not that much good. The games which required graphics card doesnt work properly. Recently I have updated my operating system from windows 8 to windows 10. After updating it has become a total scrap. It gets completely hang and I have to restart my laptop to use it again. I am totally unsatisfied with the product.
Thank you guys. Thats it from me.