ASSASSIN 4SThe ASSASSIN 4S provides exceptional performance and is armed with seven 6mm heat pipes and a redesigned 140mm FDB fan. The 4S models eliminate the rear 120mm fan, providing a slimmer, more symmetrical cooler. Application ForIntelLGA2066/2011-v3/2011/1851/1700/1200/1151/1150/1155AMDAM5/AM4 Technical Spec Product Dimensions 116×147×164 mm(L×W×H)Heatsink Dimensions 140×110×160 mm(L×W×H)Net Weight 1380 gHeatpipe Ø6 mm×7 pcsFan Dimensions 140×140×25 mm(L×W×H)Fan Speed (Performance Mode) 500~1800 RPM±10%Fan Airflow (Performance Mode) 61.25 CFMFan Air Pressure (Performance Mode) 3.76 mmAqOverall Noise (Performance Mode) =29.3 dB(A)Fan Speed (Quiet Mode) 500~1450 RPM±10%Fan Airflow (Quiet Mode) 48.55 CFMFan Air Pressure (Quiet Mode) 2.46 mmAq