Then you need a motherboard with the correct HDMI 1.4 or DP1.2 specification. If you have a Ryzen, then yes, you'll need something add-in. I'd go with something more recent than an ancient DX11 thing, ...
Some time ago, NVIDIA unveiled the GT 710 graphics card designed for HTPCs and relatively basic usage scenarios. The company claimed that you could experience performance gains up to 10 times better ...