Ditch the stock fan and put a higher capacity fan either ys tech or a 30dfm delta if you are afraid of the 38's noise. The thermoengine performance with the low profile stock fan stinks. They are selling a unit now with a cfm stock fan. I am running the thermoengine on two systems a 1gig at 1170 100% load at 43C and a 1.33@ 1470 45C the room temp is between 76 and 78.