"As mentioned before the Triton 75 is a passive cooler. ASUS includes all of the hardware needed to attach a 120mm fan to the cooler. Assuming that most users will be adding a fan we are going to test the Triton 75 with a 120mm fan.
The Triton 75 is a four heatpipe cooler with a copper base and uses aluminum fins to dissipate heat. As you will soon see the cooler is designed to pass air from above and push it down to the motherboard."
FULL STORY @ TWEAKTOWN (http://www.tweaktown.com/reviews/1285/asus_triton_75_cpu_cooler/index.html)