Quote: Originally Posted by
Gudziel 
If I get the HAF, I would also want to replace the side 230mm fan with x4 LED 120mm fans. How difficult was that?
Very easy in both removing existing fan and installing new ones
However I also added a Sunbeam Rheobus Extreme fan controller and have x2 fans per channel. A fan controller isn't a necessity though. All you would need would be two spare 4 pin molex plugs and a two 4 to 3 pin y splitter adapters (2 fans per plug).
Alternatively you could power a couple a fans off the mobo.