On full load my
PWM reads up to 52 and 44 in idle, but my room temp is between 26C and 30C these days, and it can go up to 34C inside the case; i have a Core 2 Duo E6750 @3,6 GHz 1.48 volts, wich guess it draws around 100W (CPU alone, on full load).
At the moment i don't have a fan directly on the HR09, and the fan on the back is set as an exhaust, so i reckon that i could definately lower the
PWM temps by attaching a fan to it.