Both the
X570 and the
B450 Gigabyte boards, I believe.
@Morgul The 3700X has rather low TDP, and the NH-U9S should be able to
handle it easily; you also can put a 120mm fan between the side bracket and the HDD cage to improve the airflow. I think you just need to decide what you require more: somewhat lower temperatures or better hardware compatibility.
@Aluminyum thanks for the advice. What you said is what I though in my first stage of components selection. The 3700x has a low TDP which will allow me to don't bother too much about the cooler, etc. But my latest forum readings generated me some doubts. My years of "wasting" time doing several tests with OC, UV, try different coolers, etc... has passed by. I feel lazy to start doing that things again.
This is the reason why I suddenly though in losing hw compatibility and assure the best temps for CPU. The idea of having almost no cables inside the case, is also tempted (if no disk, less cables).
So yes.... I have to decide
. I think I will go to the U9S solution and the 3.5 disk. No extra fans by now, nor rear, side or bottom, only U9S with its single fan blowing in horizontal the heatsink, the three fans of the Gigabyte 5700XT and the fan of the Corsair 750W PSU. And then, see how it goes. Maybe I have to do nothing, but if I feel it is too noisy for me or the overall temps are too high, I would start thinking in C14S or add some fans to the side, etc...
Oh dear... holy small form factor world.... this things didn't happen when I built my mid-tower 10 years ago...