ive tried reseating the heatsink and readding the paste, no difference, is there any harm in me leavin the temps how they are ie: idle 44-50c and full load upto 70c, ive opened up this computer so many times i dunno if i can be assed doing it again. if someone could tell me for sure that the 120mm over the 90mm would make a difference id probably try it, but for me to go to all that trouble of changing heatsink/fan and it not make any diffrence would kinda irritate me (nice use of words) lol, cheers