I just got a GTX card and I originally used the the integrated graphics on my AMD APU, I am still using the APU as a CPU whilst using the GTX card. Should I uninstall the drivers for AMD or keep them and install Nvidia drivers?
If yoiu had a normal CPU and then an AMD gpu then you should fully uninstall the AMD drivers with DDU before installing a nvidia card.
In your case though you will want to keep the APU drivers just as helpstar said