Ok,Well, honestly, I figured that since I was already using 2 Noctua heatsinks, I might as well load up with Noctua fans. It wasn't a necessary measure by any means. The big fan is actually pretty good. I have the one on the front running at 7V and it's whisper quiet.
Did you use one of the 7V connector bundled with the Noctuas to reduce voltage on the CM fan?
Because it's what I'm planning to try when my ATCS840+parts comes-in.
I ordered a Noctua P12 for my S1283 DK HSF, and I will use the adaptor provided by Noctua for slow down one of the 230mm on top of the case (the front one) to reduce short circuit air flow. I also added a Scythe Kama Bay+ for the front of the case.
Good thing I looked at your topic, it helped me out:thumb: