I have an AMD FX 8300 eight core 3.30 GHz processor, but my last heatsink cooling fan is buzzing (was told it's slightly unbalanced) so I ordered another heatsink/cooling fan. Turns out the new one I ordered is as loud as a jet engine. So I need help picking out a more quieter fan. I don't know much about the what fan speed it should be to be very quiet so I'm hoping the community could help. Thanks!