Tetris, it's purely extra cooling for my videocard.
For the time being the one I have now and after that the same card as you have. It's located in the airduct (look at the picture I posted, I'm holding it in place) and blows air straight towards the back of the case, essentially penetrating the Asus DCII then...
I think I just answered my own question
-edit- I really like an answer to this: Is it possible to put GT's on a NH-D14? If so, with what kind of RPM should I go, is it more quiet at highest RPM and what's the difference in cooling performance?