thanks for the reply guyz, i did take out the heatsink, removed all the dust in it, applied the new coolermaster icefusion, and now the temps are better than before:
Before: Idle: 80C Load: sometimes 90C+
After: idle: 78C Load: 86C
By the way i am getting a new gigabyte 7850 2 gb OC, in a couple of days, i just changed the cooling gel to sell my old card!
Do u guyz recommend 7850 2gb, or any other for about $250 ?