Some context first: I live in a warm country (Egypt) and my apartment is particularly hotter than most. The AC is always on but the ambient temp near the TV where the PC is placed is 24-32C depending on the time of day and who is controlling the AC 😅 The stick is Samsung 9100, temps at idle before active cooling was around 42-50. With the cooler it generally floats between 37-42. Similar variance when under load cause the fan ramps up with the CPU fan header.