I didnt use the stock airflow fans but i did test them to see that they are very quiet and well made with pads to keep down vibrationsi had a corsair h80i cooler with the extra thick radiator and it couldnt fit dual fans with my new case space constraintsso this was perfect as i could fit a slim 240mm radiatori have a stock ryzen 7 1700 and it would hit over 65c with fan set on high under full load via aida 64 stress testnow at stock settings it will not pass 4849c in jamaica in the daytime the stock cooler amd spire would go over 70c and i would not have itthis was what the doctor ordered for me installation was very simple all u need is a screwdriver read manual to know what brackets ur application needsremove the sticky tape on the copper basei did not use the included fans or thermal paste i used thermal grizzly kryonaut applied moderatly thick im sure ill suffer for this laterand i used corsair sp120 fans not passing 1500rpmsthe masterfan ab 120 included were 12v0