I installed the cooler in wrong way. The mounting plate has to be mounted back of motherboard.
It’s a huge fan. I was overwhelmed by its size when it arrived.
The installation instruction was unclear and I had to take off it once after finding 50 Celsius degrees in idle run. The square hole of the contact plate was too small so that it seat on top of the processor leaving 2 mm to 1.5 mm of gap.
I used two M5 washers instead two pieces of aluminium block for making full contact between processor and heat sink.
I think I spent good few hours to install the cooler.
It lowered CPU temperature five to ten Celsius degrees compared to the stock AMD cooler. The cooling fan runs around at 1,000 to 1,200 RPM, which is half the speed of the stock cooler. The computer runs quieter.