The cooler isn't properly mounted, the cases airflow is different than yours, that chip just runs hotter than yours.
Originally Posted by DannyLaw
Ok recently I bought my brother a E8400 cpu and installed it into the mobo (yesterday) I switched it on and saw that the RPM for the fan was spinning at a whopping 2500RPM. I also have one and that only spins at 900RPM. So what might be causing this problem?
Could it be bad contact or not enough TIM?