im a newbie but i need some questions answered before i spend on cooling. i just got the coolermaster centurion 590. im going to get 4 more fans for it soon but i need a fan controller, or do I? are they worth it? and i dont want one that has to connect to an external power supply either. maybe one that runs off computers own PSU? if thats possible. anyway, what would any one suggest? what brands to look out for?