6 of these for a push/pull configuration on the radiator. The radiator I chose needed high pressure fans to make it shine. http://www.frozencpu.com/products/12204/fan-795/Aerocool_Shark_Red_Edition_120mm_x_25mm_High_Air_Pressure_Fan_w_Red_LEDs.html Got this controller because it matched the brushed aluminum face plate on my case and the screen can be made red to match the whole red, black, and chrome color scheme. http://www.frozencpu.com/products/11435/bus-230/Lamptron_30W_-_4_Channel_Aluminum_Rheobus_w_Multi_Color_Backlit_LED_-_Version_2_-_Black_FC-5V2_w_Brighter_Display.html Need to flip over the back fan on the left as it's not pulling enough air out of the back, got both fans pointing the same way which was a mistake, need to be spinning the other way to push the air that the inside fan is pulling. I think the last thing I need to do is pull everything out to make some holes behind mobo tray to anchor some of the wires closer to the back since there isn't as much room for cables as I am used too.