Yeah was thinking about that to go with the 3" hole and extra 80mm fan.
The 40mm fans work great but now my office sounds like a server room.
Starting to think oil is the way to go...
Try running a Falcon/Thunderx3. I run my miners in my basement, ambient temp is around 69f....so it's nice and cool for operating miners. The Falcon has 3 "turbo fans" on it and it sounds like a dang vacuum cleaner. Compared to the Falcon the fans on my fury's (inlcuding the 50mm fan mounted on the end) are inaudible. Hell...I can't hear a damned thing when I'm near the falcon in the basement. I may end up moving it to the garage down there.