Osmith

Yea that's not normal, My 2700x runs much cooler, see my reply about this exact thing from yesterday: https://linustechtips.com/main/topic/1147098-2700x-idling-at-51c-normal/?tab=comments#comment-13241260

My 2700x idles at ~35c so I would say that's a little high, but I have a bit beefier of a cooler sitting on it and a buttload of case fans providing good airflow direction. I would recommend situating come additional case fans and maybe upgrade the CPU cooler. Here's the base parts list for my build: https://pcpartpicker.com/b/hGWD4D (I have since added additional cooling, etc...)