The fan most people recommend:
Yate Loon model D12SL-12 120x120x25mm (1350 RPM @ 12V, 47 CFM, 28 dB) http://www.yateloon.com/ >Product Line >DC FAN SERIES >120x120x25 >D12SL-12.
For the P180 system I'm about to build, I like quiet but want to easily turn up the
cooling when stressing the system (gaming) ... so my fans and set up:
Removing the 2 upper chamber supplied 4pin fans and replacing with similar but 3/4pin
type and using all 3 fan mounts.
3 x 120mm Antec TriCool 120 DBB fan 761345-75121-6 http://www.antec.com/us/productDetails.php?ProdID=75121
Fan4: Lower Chamber IN (no RPM)
Antec 120x38 900-1500RPM
17dBA/36CFM >28dBA/60CFM
Temp4: HDD (C: SATA0)˚C
Zalman CNPS9500 LED Copper CPU Heat Sink 92mm fan:
SILENT MODE LOW-NOISE MODE
1350RPM/18dB >2600RPM/27.5dB http://www.zalman.co.kr/eng/product/view.asp?idx=165&code=005009
I will mount the Zalman FanMate2 controller unit on the outside of the
second fom top empty 5.25" drive bay.