With Overclocking your gear, comes Overheating. Overrotating your fans through Overvolting, can help you achieve Overcooling. Don't Overdo it, because it'll be Gameover for your fans, and you'll need a Doover. Luckily, it isn't overcomplicated, or overexpensive. Here's an Overview.
Over at your local Lighting Department, you'll stumble over a device called a '300W lamp dimmer'. It plugs into a 120v outlet. Normally, you would then plug a 120v lamp into the dimmer, and it can be dimmed!!!! OOOoo!!!
Guess what, dimmers also work with DC Power adapters (little black boxes). Simply plug your 15v DC adapter (I used one from an old palm scanner) into the dimmer, and suddenly you've got a variable 0~15v external PSU that can be shut off!!!
You then cut the cord on the adapter and solder a PC Power connector onto the adapter. (using the yellow and black wires) then simply plug your fans into your creation.
(DO NOT CONNECT ANYTHING ELSE TO THE ~15V LINE!!!!)
Presto! There you have it. This will free up power from your PSU, make your system cooler, and quite a bit noisier! (or quieter @ <12V)
A 300 Ohm voltage-limiting resistor will allow you to run 12V LEDs on the 15V line. And dim them!!! OOOOoooo!!!
Over and out.
