Good cooler so big box (Zalmann MS1000 HS2) with four red wing ventilos xilence PWM, all fully managed by the motherboard (ASUS Rampage 2 Extreme). I also changed the original fan of the cooler by the same reference xilence than others. Warning! The version that was delivered to me was not adaptable to the core LGA1366 for Intel i920. I was forced to buy an adapter support!