Have a look at userbenchmark site. You download the Zip file then extract the .exe file. It doesn't install but runs a scan on your PC for hardware efficiency. Results open in your default browser. Check out the hardware information and it also has suggestions for upgrading the build's hardware for better performance. Basically a cloud operation but pretty good in my humble opinion. Your PSU 'bronze' seems good as most modern GPUs seem to use a lot less Wattage.
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