"Testing the Cooler Master with the Air Guide enabled netted some interesting results. System temperatures actually increased slightly, but CPU temperatures did lower by a small margin. What is probably happening that the CPU fan is configured to draw air into the heatsink, and the Air Guide is channeling cooler outside air on to the heatsink."
FULL STORY @ VIPERLAIR (http://www.viperlair.com/reviews/case_cool/coolermaster/cases/atc201a/201a_1.shtml)
