Ok so today i just put in my new heatsink so that i can overclock, before i was getting temps of 55 C and now i put my new one it it is only down to 49C i am using speedfan could it be giving me inacurate readings. I have and E8400 and it is said to run at 3.0 when i load CPU-Z it flickers between 2000 MHZ and 3000 MGZ what is that, and lastly it says my memory is running at 400 Mgz when it is 800Mgz DDR2. Is there a better temp. program that may give me better readings.