High-quality, elegant as well as timeless design and technical innovation - these are the features of the Alphacool Apex Stealth metal fan. With its patent-pending decoupling technology, the robust metal frame and a special rotor, this fan certainly impresses. Not only is the Apex Stealth one of the most powerful fans, but it also remains the quietest at any speed. Whisper Quiet The fan blades, motor and its suspension are completely decoupled from the metal frame. For this purpose, a special damping system was placed between the metal frame and the fan, which absorbs all vibrations. This type of decoupling is a completely new system, which is brought to the market by Alphacool for the first time with the Apex fan. In addition, the impeller is equipped with a closed frame that prevents the impeller tips from fluttering at high speed, which also has a positive effect on the fan's characteristics. Apex Design Alphacool's Apex product line represents the highest level of perfection. First-class materials and innovative technologies guarantee a unique premium product. The combination of high-quality metal, the curved frame, and aRGB lighting creates brilliant lighting effects and a distinctive design that fits perfectly into any PC build. Technical Data Dimensions (L x W x H): 120 x 120 x 25,5mm Material (Frame): Die-cast zinc Speed: 380~2600 rpm Bearing: Hydro Dynamic Bearing Connection: 4-Pin PWM Cable length PWM: 40 mm (+ 50cm extension cable) Cable length (daisy chain): 110mm Start-up Voltage: 6 V DC Rated Volt: 12 V DC Power Consumption: 6.60 Watt Rated Current: 0.50 A (0.55Max) Air Flow: 70.98 CFM Static Air Pressure: 4.23 mmH2O Noise Level: 40.1 dBA PWM control: Yes Zero RPM control: Yes Tacho Signal: Yes Auto-restart: Yes aRGB: Yes