ok i have the E5200 and at stock clock i am 35c idle and no matter how high i o/c it i still have 35c idle max oc was 4.1 i have the antec 902 case and corsare h50 along with artic silver 5 witch has been broken in properly i have a total of 6 fans in my case and i have my wires ran behind the mobo in the case so i kno there is proper airflow....