@matacar
I'm not sure you'll even notice a large difference between any of these dual tower air coolers.
It looks like, at the worst of times, this cpu doesn't pull more than ~140w:
https://www.tomshardware.com/reviews/amd-ryzen-7-5800x-zen-3-review/2
o
https://www.tomshardware.com/reviews/amd-ryzen-7-5800x-zen-3-review/3
In that regard, something like a NH-U14S, U12A, or Mugen 5 Rev B. should be enough, and more efficient than a big dual tower, because the big dual tower's capacity isn't being reached by any means.
The reason the 5800X is so 'hot' is before you even put any kind of cooler on it to begin with:
-the IHS isn't efficient at transferring the heat of the Multi Chip Module design, so some of the heat is 'lost' in the socket, before it can be transferred up through the heatspreader/paste/cpu cooler.
-the higher thermal density of TSMC's 7nm process.
-Ryzen 5000 has an even more aggressive turbo boost algorithm than previous Ryzen 3000 line. The latter would stop trying to push higher clocks around 80C. 5000 doesn't stop until 90-95C...
if it hasn't run into the PPT limit first.
-The 5800X is clock binned, but not voltage binned. Crazy how the 5900X and 5950X can run cooler than it...
Undervolting, or a negative voltage offset would likely help this cpu more than just getting a dual tower. Well, nothing's stopping you from doing both...