Originally Posted by Major Slaughter
some things you can try,
first IMO you have the fan blowing down into the xp120 like most hs's, try reversing it so it sucks up through the hs. Made a 3c improvement with mine at load and also improved mb temps. I think it sorta depends on the airflow around your case as to weather you see an improvemnt.
second, what is the cfm rating of the Papst @ 1600rpm ? you might want to consider a higher cfm fan.
Also your cpu temp is very dependent of airflow through the case so adding an additional exaust fan will help alot.