Your pc will use what's needed the power supply only gives what's required like my pc doing nothing but being on uses about 80 w when gaming uses about 330 w . PS it's a good power supply 😁
When it comes to a power supply it's the heart of your system and if it fails it can take not only it self out but other components personally I go a tad over kill with a PSU for my systems Corsair RM line up are built with good quality components plus if you have a bit more headroom it can help with upgrades down the line and as the power supply ages think they also don't turn the fan on unless over a certain load so noise levels are better 🤔
You can go with a 550W PSU, but the model line is one that you should start looking in, if you want trouble-free operation of your machine. I tend to calculate how much power a system will require, then double it, and round to the nearest standard output rating of available power supplies. This puts the system load right around the peak on the efficiency curve of most PSUs.