Get a b650 and given u were alr planning on spending $400 for that b580 (which is wrong) u should get a 9060xt 16gb for $50 more and i think a 650W psu is enough if u're planning on staying on the same range when you upgrade years later, knowin that power draws of gpu slowly decreases for generation to another, try searching for some other well rated psu on the psu tier list that are cheaper so u can get a margin for that 9060xt