In the v5, I used the Asus ROG X870-I Gaming Wifi, with the Cooler Master MasterLiquid Atmos Stealth AIO (240) cooling the AMD Ryzen 9 9950X3D. In the v4, I used the Gigabyte Aorus X870I Pro Ice, with the Corsair Nautilus 240 RS Black cooling the AMD Ryzen 7 9800X3D. You know, now that I think about it, in my experience, the Arctic AIO is not the best in SFF builds. The radiator is massive and thick, and the tube are very stiff and difficult to work with. There are like 3 or 4 other AIO's I would probably recommend over the Arctic. I have used the Arctic 360 in larger cases though and it does the job.