My suggestion would be to consider upgrading either the motherboard or the graphics card. Getting a new graphics card would definitely yield the most noticeable change in performance based on your parts list here, but considering your B450 is probably only PCIE Gen 3, you might want to also get a board that has PCIE Gen 4 or above to get full bandwith to the new graphics card. That way you’re not bottlenecking performance.
Id upgrade your GPU.
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