"220V AC Cooling Fan" size of 120mm, the amount of wind blades designed to improve the fan performance, ventilation rate for 95CFM. Fan with long life patented POM bearing (POM: steel bearings). Specifications 1600 RPM (28 dBA) or 1200 RPM (19 dBA). Another fan with high life motor design, and overall fan with dust, waterproof, shockproof, "three" function. "220V AC Cooling Fan" Extreme cold thermal testing outstanding performance this JetFlo fan, although that is the chassis fan, but in order to test the performance, we will place it on the radiator, and ordinary "220V AC Cooling Fan" comparison test. We use Cooler Master Blizzard T4 radiator mounted 120mm fan and JetFlo ordinary fan, let intel3770KCPU full, and the highest fan speed control in two tranches at 1200rpm and 1600rpm speed, for cooling the temperature of the test. Environmental temperature is about 26 degrees.