Ok, thank you. I'm getting the EVGA pre overclocked model for $13 USD ($20 where I live {australia])It should work just fine. Your current mobo, is PCI-E compliant and the card should work fine.
The recommended PSU is a 500w. You should be okay with the 450 though, Although the EVGA is a good brand, it's not a great PSU at all. Here's a review: https://www.jonnyguru.com/blog/2018/09/03/evga-450bv-450w-power-supply/6/
Just keep in mind, it has no longevity, is built with average components, and is already short of the recommended spec for the GPU.