Good discussion here on brands and fans, bearings, and orientation of cards.
My question... is water cooling more energy efficient or helpful to make a card overclock and work better or gain more hashrate? Or is a working air cooling system just as good as a GPU water cooling system? I have never tried water cooling and am just thinking about the summer time and proper planning.
Most water cooling setups keep the GPU noticeably cooler than air cooling manages - at a cost as the systems are expensive compared to air cooling.
They probably use a bit more power though, as they tend to use a higher-end fan on the radiator AND the pump uses some power.
Might be close or a bit less power though, as the fans they use TEND to be more efficient than the very thin fans air-cooled cards have to use.