I got dell inspiron 15 3542 laptop some months ago. It came with i3 processor with 1.7GHz cloak speed(4th generation), win 8.1, 1TB HDD, 15.6" display, 4GB RAM, 2GB NVIDIA graphics card(GEFORCE 820 GTX). on overall the lappy is fine but its touchpad is not so smooth i.e you can not work for long on it, you will definitely need an external mouse.
Though it is equipped with 2GB nvidia graphics card, it does not perform well in games as the installed GEFORCE GTX 820 is not a powerful card. along with the lag you can easily see poor graphics quality rendered by it. hence, its 4GB RAM is also not of much use.so, it is not at all for gaming. but for normal use it is a good in-budget lappy with huge hard disk of 1TB to store enough data. also the keyboard is good for typing.battery life is good( approx 4hr when new)