I've got my I5 2500K running at 37c idle and around 60c on load at 4.4ghz on cooler master 212 +. Seems rather high to me when compared to other peoples CPU, and their temps on stock cooler..
So my core temps have seem to decreased, using the supplied TIM with the 212+ from 37c idle to 34c.. CPU at mid 50c on load whereas it use to get into the mid 60s, ambient temps at 22c.
Would a change of TIM lower my temps further ?