How many fans do I need? Well, as of TODAY I have:
1 x 140mm rear fan
1 x 230mm front red LED fan
1 x 230mm top fan
1 x 230mm side fan
2 x 120mm CPU fans (Ultra Kaze)
1 x 120mm HDD Cage fan
This doesn't even take into account my GPU fan or my PSU fan (which are not controlled by a fan controller).
I planned on eventually swapping the side fan with 4 x 120mm Ultra Kaze fans, the top fan with 3 x 120mm Ultra Kaze Fans, and the front fan with 2 x 120mm Ultra Kaze fans...
Those fans are LOUD LOUD LOUD and need a fan controller for when I am not overclocking...
I was thinking of getting a Scythe KQ02-BK Kaze Q12 12-Channel Fan Controller to complement all my fans... But I discovered that the design of the HAF along with my new HDD cage fan, was sufficiently cooling my components, and only use 2 controllers on my 2 existing Ultra Kazes when I game...