AN400 BKThe AN400 BKis a 4-heatpipe low-profile air cooler that provides 150W of TDP in a compact heatsink. With unobstructed clearance for RAM modules, and a top-down air flow, the AN400 is a great option for everything down to small ITX builds.COMPACT AND FEATURE RICHWith 62 nickel-plated aluminum fins, 4 optimized heatpipes, and a raised copper coldplate, the AN400 BK packs a lot of cooling potential in a small 53mm tall CPU cooler.SMALL BUT CAPABLEEquipped with a slim 92mm PWM-enabled FDB fan with a visible 6-phase motor, the AN400 BK can spin up to a staggering 2950 RPM while staying below 23.2 dB(A). A low-noise adapter cable is included.PASSIVE AIRFLOWThe top-down design has the added benefit of providing passive airflow to the surrounding VRMs around the CPU.SIMPLIFIED SUPPORTThe all-metal back plate is easy to install and evenly distributes pressure from the rear of the motherboard, while providing reinforcement behind the CPU socket.