Coming from a mATX setup that ran pretty loud and hot I wanted to build something that was quiet this time around. I still wanted to OC everything and try to get the whole system under 25 dBA while gaming/stress testing.
The real compromise I had to make was taking off the side moduvent and adding a third intake. Without it the top card would heat up to around 83-85°C unless I bumped up the fan curve. With the third intake the noise is about the same since I no longer have to change the fan curve and the Noctua fans have much better acoustics then the fans used on the ACX cooler.
UPDATE: Ended up getting two 980 Ti Hybrids to replace my two ACX 2.0+ cards that just got to hot and loud when two are involved for me. Added a Swiftech PWM splitter and have everything running off of that. Overall I'm really happy with the build now. The performance and noise level's are right where I want them to be and if the case didn't have a blue LED to let me know it was on I really wouldn't be able to tell.