I have a good old i3-2120t (35w) cpu with 4 GB RAM. I have only used on-board graphics, but the time has come to put in a discreet card. THERE WILL BE NO GAMING ON THIS MACHINE. I have a PC for that. I will probably bump the RAM to 8 GB.
My thought is that this card is the best option:https://www.msi.com/Graphics-card/GeForce-GT-1030-2GH-LP-OC.html
It boasts both an HDMI 2.0b port and a DP 1.4. Its also passively cooled, which is a bonus.
Also, as a side note, how well does audio do over video cards these days? The last time I did it, it required a special cable to enable it.