Good day TPU! I have an ASUS Maximus VII Gene and an Intel Core i7-4790k on the the way to replace my old mobo and processor which just recently decided to stop working. I've also found out that my Antec H2O 920's pump is making some weird noises so I would like to replace it as well. I would like to go back to air cooling but I only have limited options because the RAM I have has tall heat spreaders. I'm thinking of buying either a Noctua NH-U12S and running it in a push/pull config with 2 Corsair SP120's or a Noctua NH-D15 and running it with 1 fan in the middle. What would you think would be a better option? For +/- $20 more would the D15 be worth it? Or is there another option that you could suggest?