Well, perhaps someone should tell me if the NH-D14 would fit that mATX motherboard, because I feel easy with the guess that it does so.
My eVGA [NVidia] GTX 570 is 10.5" long and some 4.5" high. I am replacing it with a GTX 780 that is maybe a half-inch and change longer. The only thing that required measurement before I clicked "Proceed to Checkout" was the distance between the back of the case at the PCI-E slot and the drive cage in front. So I'd think it is your case that will determine whether you can use this or that VGA card with that mATX motherboard -- not the board.
Helluva nice mATX Haswell board from reviewing the ASUS web page on "features." I'll file that away for future reference.