Steve the Fan 120x120 is for the front of the tower to blow more air into it. lol
not the CPU lol
as for the tube of thermal compound, i going to change what it came with and hope at less it bring it down to around 35c to 50c, as it is running idle 61c to 70c
60c is center yellow zone, hits 70c plus it in the red zone. like it to be in the grean zone more.