I am well aware of the Galax Katana, thank you, but it is an aging GPU and I would prefer a brand new one.
And people are asking to much money for it on second-hand.
I need a single slot GPU because I have a small form factor case and one slot on the two is already taken by a PCIe SSD.
Concerning a watercooled GPU, I am also aware of the Zotac RTX 2080 ti articstorm.
As I said, I have a small case.
I want my case to be as silent as possible so, no pump noise.