Am running a 3900x (on Asus X570-E) which I have been running for about 3 months. To begin with it was a shock moving from a 5820k (overclocked to 4.6) simply because the operating temperatures were so much higher on the 3900. However having read up a bit I realised that this was to be expected given the number of cores etc. Did consider that I might get better performance and/or better temps if I were to either run an overclock and/or a power plan but in the end decided that such did seem a bit pointless as long as the heat did not get too much.(overall I believe that looking to overclock would not give me much , if any, improvement in performance) Running the pc today I noted that the temps have risen substantially - idle /tick over about 37 to 40c with it topping out when gaming at 72c. Even though I would prefer them lower I do not believe that these temps are in any way a 'problem' - thoughts appreciated. (and if anyone considers that there is anything to be done please advise!) Am running a cusom loop cooling both cpu and gpu. Lastly just to mention that per the Asus website there is a new bios for my board which refers to a new Update AMD AM4 AGESA PI 184.108.40.206 which I believe is a good thing which I will install tomorrow.