I am considering an AMD Fury X, which comes stock with AIO water cooling. Due to the configuration of my case I would have to put the radiator underneath the card itself. That would put the pump at the highest point in the loop, since it's on the GPU. According to the Fury X's manual: Do you think that's a strict requirement? I would have thought that the relative position of the radiator would not matter for a closed-loop cooler.