I'm MATX at the moment (in a TJ08-E), so no plans for ATX, but I was considering going SLI in the near future (with 970s most likely), and although my board can do that (EVGA Z68 SLI Micro 1155), I was slightly concerned with the Evolv that the space might be a bit tight in there with airflow. Now this noise issue has me worried.
Swap out the 200mm in the Evolv? Is that the noisier one then? They both seemed quite quiet fans from most reviews I read, so the KitGuru review puzzled me. I have read on 5v they are all very quiet though, but what that does to temps can't be ignored of course... about 10 degrees on CPU (even more on GPU) according to the review
here (need to translate from German).
I've no idea how this compares to H440 in a similar setup though. I know the fans in that run at 12v all the time and there's no controller, which is probably necessary given the poor airflow, but the sound deadening helps there of course. There is no such sound proofing in the Evolv, even though the thick panels might help somewhat, so running the fans at 12v seems somewhat unncessary (and noisy), but 5v means a big increase in temps. Or so it would seem anyway. Is there a middle ground here, can you volt them somewhere in-between? This is not an area I am experienced in.
Maybe there is a solution here with putting new fans in the Evolv (as it seems you are doing), quiet ones that can cool really well. Yet I keep reading good things about the Phanteks fans that are in this case, so I don't which way is up anymore! Help...