What is your CPU, if i'm correct, it's an i5 2400, Right?
considering its a sff, there is a decent card that can handle netflix at 1080p
and maybe light gaming.
Here Is the link: https://www.amazon.com/GIGABYTE-GeForce-GV-N1030D5-2GL-Computer-Graphics/dp/B071DY2VJR/ref=sr_1_1?s=pc&ie=
It Can run on the stock PSU no problem.