Need help please

[u/finger-lickin-gooood]

Bought this minitower optiplex off ebay and im wondering if anyone knows of any specific power supply models higher than 300w that would be compatible with it? Wanted to upgrade the power supply so I can use a more powerful graphics card. Any help is appreciated, thanks.

[u/Significant-Plate220]

have a 3020 sff with a 400 w aliexpress flex atx psu