Yeah, I've been using this case for about 3 weeks or so now (whenever it was in stock at OC). I have 5900X with X63 280mm AIO. My cable management isn't ideal, I couldn't put a fan at the bottom at all, and even if I did, it would just blow air straight into cables, so find it pointless.
This case is nice looking, but it's a total mess thermally. What I did, because PC is up against the wall on my desk - the left side facing me has double mesh panels and the right side of the case facing the wall has no side panels at all, so it just breathes air in (whenever the extra mesh panels arrive, I'll put those in). CPU temps are borderline fine. Normally I get around 70C-75C under load, but if I do a stress test like Prime95, it shoots to 90C and stays around there. Cinebench R23 is better - around 77C. Note, I had to replace my AIO stock fans to Arctic P14, because I didn't want my PC sound like a jet engine when I work or game. Surprisingly, between the two Arctic P14 sounds much quieter and has same or slightly (I mean like 1C or 2C) better temperatures too, note I'm also using Grizzly Bear's Metal Liquid.
Not going to lie, but I'm looking into NR200 series cases. I want more space for cooling. This case needs more air desperately, because even the existing 2 fan config, barely has space for air. There's AIO pipes in a way on one side and barely an inch gap on the other. If I had more fans I wouldn't complain, it is an ITX after all, but with only 2 fans... I find my old Ghost S1 was thermally better with the same CPU and it was also smaller too.
