Then again, I have 2 420mm Black Ice Nemesis radiators in my custom loop - even at relatively low speeds it can keep the 5800X in there and 3080 Ti cool under constant high loads.
My mini-ITX work desktop has no problems with a 5900x and a Radeon VII pro running Rocm work, using only a tiny heatsink on the 5900x (and some high-airflow fans, but nothing too incredibly loud). It doesn't thermal throttle, but tops out around 80-90 degrees C.
The 7000-series seems to be a different story: you really need a big cooler for those chips.
I have the same CPU + GPU combination, but used on an ATX MB with a Noctua cooler with a double 120-mm fan.
While the larger case and cooler makes the cooling easier, the fans are normally inaudible and the CPU stays under 45 Celsius degrees when not doing heavy work, and the temperature may raise up to a little over 60 degrees Celsius when 100% busy.
From what I have seen until now, cooling will no longer be so easy for the 7000 series, unless you choose to run them in the Eco mode.
Easy build, the case has a lot of room to route. I went with ZMT tubing rather than hard tubing, as I didn't want to deal with rigid fittings, I prefer the aesthetic, and it's easier for routing when you can have things other than right angles!
One important note - the front rad is an X-Flow rather than traditional U-Flow.