What PSU can I install in this computer

[darrianbrown27]

https://www.amazon.com/gp/product/B01CUZKM3C/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
I already bought this computer, I am not very tech savvy, sorry if this is dumb.
I need a better PSU and my limit is roughly $100 I dont know what PSU to buy because im worried it wont fit or wont have the right connectors. If anyone can help that would be awesome!

 

[aquielisunari]

https://www.amazon.com/gp/product/B01CUZKM3C/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
I already bought this computer, I am not very tech savvy, sorry if this is dumb.
I need a better PSU and my limit is roughly $100 I dont know what PSU to buy because im worried it wont fit or wont have the right connectors. If anyone can help that would be awesome!

It accepts a standard ATX power supply. https://www.amazon.com/Seasonic-SSR-550FX-ATX12V-Modular-Compact/dp/B073GY89G5 will handle anything up to a GTX 1080. It's also 80+ Gold certified so that means it's more electrically efficient than a Bronze rated PSU. It's also modular so you only use the cables you need which makes cable management easier.