Better is about more than resolution.
Comparing TVs, a Samsung next to a Sonic or other budget brand is like night and day. Colors are better and contrast is better.
If you are looking at this as a computer display for games, response time is important too. TVs have complex processing of the video signal to try and improve your TV image. This introduces a delay. Computer monitors are better for games.
For resolution, your card can output 4K but isn't fast enough to run a graphically intensive game at this resolution. Stick to 1920x1080 or 2560x1440.