Working with this case was a pleasure considering that this was my first liquid cooling setup install experience. I really expected a solution like this to be more silent compared to an air cooled one, but it seems that if you have low RPM coolers in your air cooled case, it may be more silent overall compared to a liquid cooling solution. The pump makes in this situation a lot of noise, and, for high performance, you are forced to turn the radiator fan at higher speeds (louder).
The sound is much lower if this case would have mounted bigger radiator so we could install 2 or 3 silent cooling fans on it for high cooling performance.
The manufacturer mentions that the cooling setup on this case can also support a GPU waterblock along with the CPU one.

http://www.pcshoptalk.com/forum/showthread.php?t=8708