Tested on I7 11700K with good air cooling, it was idle at 43-45c and reached up to 95c at full load. With this specific one, it dropped to 32-35c idle and reached up to 80c at full load. After installing a second fan at the back of the cooler, it was idle at 25-28c and reached 70-72c at full load. Quite satisfied since it is a quite hot processor and my case has limited air flow.
I recommend installing a second fan at the front and back where a 240mm cooler cannot fit

From a construction point of view, the corners of the fan broke while I was screwing it onto the refrigerator... I was shocked! Now it sits with three screws! In terms of cooling, it does its job but I didn't expect such a poor construction from cooler master