If you do a cpu only loop with a 5.25 bay res and a 2x120 rad on top, it would fit. If you plan on including a gpu in your loop as well, you should have spent a little more on a better case.
I love my HAF 912, my only complaint is that when I got it there was no option for a black interior so it looks really ugly on the inside. Other than that I do not plan on upgrading my case anytime soon