I am surprised to hear that a 3950X (105 Watt TDP) runs with 40-50 degree under load, while the watercooled 3950X hits 70+ degree . I also have 70+ with with my 2600 (65 Watt TDP). What are we doing wrong? Beside not having the pc in the (colder) garage and different cooling solutions. But so much better is really impressive.
Clarified the post's preliminary findings to avoid any confusion with 3950X temperatures in a 5L case. The processor will no doubt run hot when used in normal (indoor) settings. My findings are skewed due to ambient temperature in testing environment.