The core only gets into the 90C range when the fan is maxed out at 29%.I dont mean to sound offensive but where do you get that from? The fan is a loud one when it revs up to max and even then, the core's hitting 90C.
Put the fan on 50% and the core will be in the 75C range.
Put the fan at 100% and the core will be inthe 55C range.