Apex Stealth Metal Power Fan 3000rpm White (120x120x25mm) 13825 Features: 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. Powerful All-rounder The Alphacool Apex Stealth metal fan is a true all-rounder. It sets new standards in terms of airflow and static pressure. Therefore, this fan is not only perfect for mounting on radiators, but also provides excellent airflow as a case fan. The Apex Stealth Power can be controlled between 400 to 3000 rpm via the 4-pin PWM connector. The startup speed is ~500 rpm. In addition, the Stealth offers Zero RPM control, which can be used to bring the fan to a complete stop. Apex Design Alphacool's Apex product line represents the highest level of perfection. First-class materials and innovative technologies guarantee a unique premium product. Consisting of high-quality metal, the curved frame gives the Apex Stealth its distinctive design and fits perfectly into any PC build. Additional Features As usual with Alphacool, multiple fans can be effortlessly connected in series via daisy chain. The cables can be hidden in the corners of the fan so that they are no longer visible. A 50 cm PWM cable is also included as an extension. The 6-pole motor in combination with the HDB bearing (Hydro Dynamic Bearing) ensures extremely quiet operation and high durability. Specifications: Dimensions (L x W x H) 120 x 120 x 25,5mm Material (Frame) Die-cast zinc Material (Impeller) Plastic Weight 320g Speed 400~3000±10% rpm Bearing Hydro Dynamic Bearing Connection 4-Pin PWM Cable length PWM 40±8 mm (+ 50cm extension cable) Cable length (daisy chain) 110±10 mm 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 MTBF 100,000h PWM control Yes Zero RPM control Yes Tacho Signal Yes Auto-restart Yes Color white