I'm building an internet surfing / light word processing computer for my parents. The current specs are: i3-6100 processor, 16 Gigs DDR4, single monitor, SSD for the hard drive, Windows 10 x64, and a 600 watt power supply. Would adding a discreet video card have any performance benefit for this kind of use, or would it be a waste of money? If I decided to get a discreet card, the ones I'd consider are the GTX 750ti or R7 370 but I realize they may be overkill and I'd appreciate other less expensive suggestions. Thanks!