So basically I tried to understand your experience with your bykski waterblock using google translate and as far as I understood you had an issue similiar to mine. Right now I have a 6900 XT Phantom D and a Bykski waterblock for it. The delta between the GPU edge temperature and water temperature is generally about 23c. The delta between GPU edge temperature and GPU hotspot is generally about 20c. I get 61 edge and 75 hotspot at 280 watts power limit and water temp is 39c. I think my GPU temps are way too high for a custom loop and my GPU-water delta is high as well. I am not sure what causes this but I guess it is the thermal paste or the included 1.8mm thermal pads. The thermal pads are really bad in quality anyway, I get 70c vram temperature while mining. Anyway, I remounted the block a few times but the temps were always bad and nothing changed. I am planning to use liquid metal and 1.5mm Gelid Extreme pads just like you did. Is this a good idea or do you have any other suggestions? To be honest I am scared to use liquid metal because it may break my card.yes you can