The cost effective alpine 11 gt is targeted for users who look for a quiet and efficient coolerat a reasonable price the cooler feature some high performance components the alpine 11 gt is equipped an 80mm pwm fan with pwm function the fan runs at the necessary speed in order to offer sufficient cooling at the lowest possible noise level the low noise impeller keeps the fan as quiet as 03 sone even at full speedthe alpine 11 gt is designed with an optimized heatsink and the pre applied