so, i've been monitoring my worringly high cpu temp over the last few days, which peaked at 68oC at one point 
I turned off Q fan (performance mode) which increased rpm of the fan, dropped the temp down to mid 40's and bizarrely, made the fan quieter! huh!?
Today, i dragged out the much under-used dyson from it's resting place and procceded to clear all the dust build up on all of my fan blades and the block under the cpu fan, and voila 27oC at cpu

I turned off Q fan (performance mode) which increased rpm of the fan, dropped the temp down to mid 40's and bizarrely, made the fan quieter! huh!?
Today, i dragged out the much under-used dyson from it's resting place and procceded to clear all the dust build up on all of my fan blades and the block under the cpu fan, and voila 27oC at cpu
