Noctua NHD14 in the house, this thingy is HUGE.
Installed horizontally (blowing towards the back of the case) with 2 push-fans and fitted fine .
Just installed, and didn't have a chance to look at temp load-temp yet, but idle-temp seams to be a couple of degree lower . Just fist impression, tho.

If you install the NB-cooler, then forget using 12GB tall RAM at all. You may use 6GB tall RAM by removing the first push-fan, tho. I'm glad for having low-profile RAM, my Corsair XMS3 sneaks just under the cooler and I can use 12GB, but don't need it yet, anyways.
So far so good