You should pair a DDR4-3600MHz tight latencied ram kit in order to get the most out of your Ryzen 5000 platform. To add, what is the make and model of the 500W PSU you've listed above? I wouldn't go with Intel.
Yeah, that's horrifying. It's not so much the wattage as the absolutely abysmal quality. Very cheaply slapped together junk that should never be used with your current GPU or any that requires supplementary power; you've been fortunate if you've been running that GPU with that PSU for a while and haven't had (visible) problems.