I bought a 97mm 12volt blower fan that pushes 270CFMs. When I got it I had to rewire the leads since there were 4 leads.

RED
BLACK
YELLOW
WHITE

I put red and yellow together and white and black together and turned on my power supply and it kinda spooked me for a second. I mounted it into my system on top of the water cooler and it dropped 20*F on the meter. After I closed the case it sounds like a standard 80mm fan running.

I got the fan from my favorite electronics site. AllElectronics.com and only paid $5.50 for the fan.
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