ok, thank you very much!RX 5700XT is 225W GPU, add the rest of the system at about 200W to it and max what your PC can consume on 100% load is about 425W. If you OC CPU and GPU, about another 100W is added to it, making OC'd PC power consumption about 525W. Your EVGA 750W PSU is more than enough for your PC, both wattage and build quality wise,
PSU review: https://www.jonnyguru.com/blog/2018/07/30/evga-supernova-750-g1-750w-power-supply/