I just orderd the Thermaltake HardCano 9 which has 4 fan control knobs, i'll let you know how it works once you get it, if you wish
the hardcano also shows you the RPM the fan is working at the current moment, and the temps of you'r GPU/CPU/HDD/Socket/chipset or something like that, i'll know better when I actualy have it.. ^^.
-Jo