"The overall performance of the Coolink SWiF2 series of fans was actually quite good. The temperature dropped a full degree Celsius on the graphics cards when compared to the stock fan in the rear of the test case, and the overall sound output dropped slightly. The more impressive performer of this series was the PWM regulated 120 mm fan and its use on the Xigmatek heatsink. The temperatures of the load testing on the Xigmatek saw a 3 degree drop in temperature with the Coolink fan installed and, in addition, the overall noise output of the case was reduced significantly, which was easily noticed during auditory observation."
FULL STORY @ HEATSINKSFANS (http://www.hitechlegion.com/reviews/cooling/heatsinksfans/1157-coolink-swif2-series-fan)