the thermoengine with a 7000 rpm fan is sexy and very efficient. concur with admin on case ventilation. i used a 4" extractor fan blowing out the rear of the case right next to the cpu cooler on my last project and my temps dropped 5 degrees celcius (dont know what that is in F ). interestingly i disconnected the 5" fan at the front of the case when it became annoying (noise) and it did not affect my cpu temps at all ........................ hmmm strange!