i said it once, i will say it again, the Ryzen 5 3600 or 3600X or even the 3600XT, are amazing processors when it come to price to performance, and the 2080 ti should not have any problem scaling with the 3600 or either of its refreshes. Now for the motherboard, if you are on a budget and want an Asus MoBbo, then go for the Asus B450 Prime A is the name i think, and if Asus is not the only option, then go for the Asrock B450 Steel Legend.