Dark, reliable, affordable – these are ARCTIC’s new CPU coolers, the Alpine AM4 Passive and the Alpine 12 Passive. Both passive coolers are available now and provide silent cooling for the AMD AM4 platform as well as for PC’s with an Intel 115X base. The active coolers in other Alpine series will likewise be replaced with newly developed models during the course of the year. The Alpine AM4 Passive and the Alpine 12 Passive operate fanless and completely silent, yet they are powerful enough to cool all compatible CPUs up to 47 watts. The black anodization of the aluminum heat sink is not just an optical improvement: the heat dissipation of the heat sink is also increased through anodic oxidation. Black Anodization for Improved Heat Dissipation. Anodization produces a unique, coarse surface which increases the contact surface area of the heat sink. This, combined with its black color, results in increased heat dissipation, leading to an improved cooling performance while operating passively. Since dust cannot settle on the Alpine AM4 Passive and the Alpine 12 Passive coolers, they can be used for years without needing maintenance. Applying MX-2 Thermal Compound beforehand ensures a quick and clean installation process. Main Facts Alpine AM 4 Passive / Alpine 12 Passive Completely silent due to passive operation Dustless and maintenance free Pre-applied MX-2 thermal paste Black anodising for improved heat dissipation The Alpine 12 AM4 Passive and Alpine 12 Passive are available now at Amazon.co.uk at a price of GBP 13.99 MSRP.