The aluminum fins of the Silver Arrow ITX-R Rev.A have been optimized to the specs of the Asus “Republic of Gamers” Mini-ITX motherboards. The design guarantees that incompatibilities to memory modules and VGA cards are excluded on these boards. The copper heat pipes and the mounting materials are nickel plated as well. As with all our high performance and quality coolers the Silver Arrow ITX-R Rev.A makes use of the well-proven heat pipe technology. A total of six high-performance 6 mm heat pipes provide the most efficient dissipation of the generated processor heat. The heat pipes are tightly integrated into the copper base plate, which guarantees the most effective heat dissipation. The included TY 129B fan is temperature controlled (PWM) – the fan speed varies (depending on the CPU temperature) between 600 and 1,500 rpm. The air flow of the for silent operation optimized fan varies between 28.32 and 84.97 m³/h while generating a noise level of about 19 – 23 dB(A). This means the fan will hardly be noticeable during standard operation. The fan features the mounting points of a conventional 120 mm fan and has a larger inner diameter than conventional 120 mm fans. The silent running fan is fitted securely to the heatsink with the included, revised fan brackets – adhesive anti-vibration pads allow for decoupled mounting. Intel:775/115X/1200/1366/2011/-3/2066 and AMD:AM4/AM5   Heatsink Specifications: Dimension: L155 mm x W103 mm x H147 mm Weight: 630g Heat pipes: 6mm heatpipe x 6 units Fin: T = 0.4 mm；Gap=2.5 mm Fin pcs： 41pcs Copper Base: C1100 Pure copper nickel plated TY-129B FAN Spec: Dimension: L130 mm x W120 mm x H25 mm Weight: 130 g Rated Speed: 600~1500 RPM±10{92d0f8a9ef26b7e4fcbeba3ef12dd484c9f5d5dc4b04b81a6c2fc68f03b22aff} Noise Level: 19~23 dBA (MAX) Air Flow: 28.32~84.97 CFM (MAX) Air Pressure: 0.30~1.89 mm H2O Ampere: 0.20 A Connector: 4 PIN PWM Bearing Type: Sleeve Bearing