I made this Backplate for AMD AM4 Platform. The Model is like the Original. 
You can Print this in PETG, but i really recommend any Carbon Fiber Filament, like PETG-CF, PLA-CF or ASA-CF/ABS-CF. 

The holes dont have a thread, its because if you use PETG the original screws can cut a thread themselves. If you use CF, you can cut a M4 thread with a threadcutter and use regular M4 HEX screws.  

Layerheight 0.2mm
Infill 50% or 100% (as you want, i recommend 50% Gyroid)