|@Fingers thanks for the reply..|
I m using Default Sink that comes with Intel processor and Cooler Master's IC Essential E2 Thermal Paste.
I m using Cooler Master Half with 1x200mm Fan at bottom front and 1x200mm Fan at top back also 1x100mm fan at the back top of the cabinet by default.
I have checked the fitting of the CPU heat sink and i feel it its ok.
But i just found out when i was playing CitiesXL 2011 game... 1st core of my processor is being used 100% and rest 7 are barely used say 2~10% at max... this may be a factor... should i contact Intel for this...