First of all, if you plan on going silent, there is no need for the Cosmos II. Or, if you really want it, stop all the case fans. For that configuration you do not need airflow. You will only have 2 fans (CPU + PSU).
And when you plan on gaming, turn them on.
What I don't like about the Cosmos II fan controller, is that I cannot completely stop the fans. When i'm watching a movie/web surfing, i don't need the case fans. There is no logic for them to run, even at low rpm. The front fan will just get dust in my system. Edited by cosmin - 4/11/12 at 6:59am
All im saying is, since hes looking for quieter options, and is on the cosmos II page imma assume he wants to quiet his Cosmos II not get a differnt case. Hell you could use some fans at high and not hear them?
Yeah..if he wants the Cosmos II, then nobody stops him. From my point of view, he doesn't need it for that configuration. When I chose Cosmos II, I had 3-way sli and 240mm rads in mind, not Intel HD Graphics.