related only by brand... I upgraded from a 2013 iMac to a 2019 model recently for two reasons, the primary being my 2013 used an Nvidia 780m chipset and Nvidia

related only by brand... I upgraded from a 2013 iMac to a 2019 model recently for two reasons, the primary being my 2013 used an Nvidia 780m chipset and Nvidia no longer made compatible drivers and Apple wasn't doing any real updates either. Second I wanted he higher resolution screen. However, the fan which I rarely had come on in the 2013 is hyper active at times in the 2019 even with similar content. Oddly it is not consistent. Now I did go from i5 to i9 which do run hotter but they are very spiky as in the seem to flare a core or two enough to excite the fan logic. The GPU while getting warm (Vega 48) will less likely cause the fans to spin up past 2k than a random cpu spike. So either the fan logic is wonky or the processor logic is. While I understand that core balancing is complex it just seems to randomly jump single channels far more often than load across the whole