Hi, I'm thinking about replacing all the fans in my case with Noctua NF-F12's and having a NF-P12 as the rear exhaust, image below. Considering Noctua fans because I think they kind of go with the Asus Sabertooth motherboards and I am looking at buying the Z77 sabertooth and a 3770K on release.
The two in the front and the two in the middle would be modded in NF-F12s, H100 in the roof with two NF-F12s on it and a NF-P12 on the rear exhaust.
Still not sure about the two in the middle of the case. Might also consider putting a one on the floor below the two in the middle next to the hard drive cages to feed some extra air into them.
Even though Noctua fans tend to be quiet, how loud is 5 or 7 of them? Or would it still be a quiet machine?

The two in the front and the two in the middle would be modded in NF-F12s, H100 in the roof with two NF-F12s on it and a NF-P12 on the rear exhaust.
Still not sure about the two in the middle of the case. Might also consider putting a one on the floor below the two in the middle next to the hard drive cages to feed some extra air into them.
Even though Noctua fans tend to be quiet, how loud is 5 or 7 of them? Or would it still be a quiet machine?