What I'm missing as outcome of this analysis is: if you want to upgrade your gpu on your old pc, rather don't buy strong (and insanely expensive) nvidia gpu.
if you set up a new gaming pc, make sure, you use 9800x3d, then you may pair it with any gpu.
if you set up a new gaming pc, make sure, you use 9800x3d, then you may pair it with any gpu.