The NH-D14 is an incredible cooler. I have mine paired with Arctic Cooling MX-4 thermal paste and the cores of my 1090T (with a Vcore @ 1.57) idle at 21-22C in a 70-72C room in my Coolermaster HAF X 942 with the stock fan configuration. If that is not proof enough of Noctua's Innovation, I don't know what is.
A company like this needs to be rewarded for it's innovation, especially with some of the low-profile solutions that they have created. Yes, it (the D14) does sit above my RAM slots, but I purchased low-profile ram so that i could have that cooler. Airflow around the ram is better than would be expected also.
Noctua's build quality is something to be mentioned also, I have not used a cooler that has been easier to mount with equal pressure on the entire surface of the CPU. The mounts are incredibly secure, and re-mounting is a breeze in case you want to make changes, such as trying new thermal paste. Tension Springs are used on the screws that mount the cooler also. I can't say enough about the quality of the cooler, compared to other popular brands, Noctua truly does outperform in quality and performance.
I'm very excited about the triple stack, and can't wait for benches to come out with the new bulldozer lineup. I would expect to see some wonderful things from this company