Optimised heatsink designed for slim cases Ultra quiet 92mm PWM fan Dual heatpipe for efficient heat dissipation Patented fan holder to eliminate buzzing sounds Pre-applied MX-4 thermal compound Easy installation with push pins Excellent Cooling PerfomanceA 92 mm PWM fan, 50 fins, 2 copper heatpipes in combination with pre-applied MX-4 high peroformance thermal compound provide excellent cooling performance and improve heat transfer from the CPU. In a test conducted by Svet Hardware, the Freezer 11 LP successfully reduced the CPU temperature of an Intel Core i5-661 by 19 degrees.Virtually SilentIts low noise impeller and patented fan holder ensures the fan to work quietly even under full load. PC Tuning showed us that the Freezer 11 LP is 16 dBA lower than the second best low profile cooler in the test they did, the Cooler Master Vortex 752. Thanks to the PWM control, the fan speed adjusts according to the CPU temperature and thus the noise level remains at an absolute minimum which qu