First you need to look at your Motherboard's Video Output specs to find out what is the Maximum Resolutions for each of its video outputs.
Also need to find out which version of HDMI and DP your Motherboard video outputs supports. That will tell you the Maximum Resolutions it will support.
This is my Asus Motherboard Specs for it video outputs:
Integrated Graphics in the 3rd, 2nd and 1st Gen AMD Ryzen™ with Radeon™ Graphics Processors
Multi-VGA output support : HDMI/DisplayPort ports
- Supports HDMI 1.4b with max. resolution 4096 x 2160 @ 24 Hz
- Supports DisplayPort 1.2 with max. resolution 4096 x 2160 @ 60 Hz