This sums up the basics: https://twitter.com/Dowlphin/status/1015968076544782336 (Don't wanna write the whole story again.) The only two things I csn imagine, but an AIO system that can audibly push air out of the pump ending up with a massively reduced heat transport away from the pump? Or a top notch thermal paste doing fine at first and only after two months failing without any visible change? I am flummoxed.