Enermax Cooling ETS-N30-TAA Black/Blue/Aluminum Patented SEF (Stack Effect) design to enhance heat transfer Unique air path creating high VEF (Vacuum Effect) to optimize the airflow HDT (Heat-pipe direct touch) technology to ensure rapid thermal conduction and eliminate CPU hot spots Twister Bearing technology for longer lifetime and low noise (ETS-N30-TAA only) "1-clip" fan bracket design for user-friendly installation High thermal conductivity grease to ensure the best thermal conduction between CPU and the heat sink Patented circular type LED with 9 diodes and up to three times brighter than other LED fans (ETS-N30-TAA only) Durable metal bracket for Intel 775/1150/1155/1156/1366 & AMD AM2/AM2+/AM3/AM3+/FM1/FM2/FM2+