Yes I'm using the Dark Rock Pro 4 on the 3900x. The biggest difference for me is the noise. That Wraith would scream like a...wraith when the CPU was under full load. Now my PC is far quieter. Temps for me go from 40-55 Idle to 77-85 degrees full load but depending on what load it's under. Certain CPU instructions/tasks give off more heat, but gaming from what I've seen will go up to 82. Can highly recommend this cooler.
yeah the bequiet fans are top notch for noise i'll be changing out all my noctuas for them at some point been really impressed with how good they are.