Mine is working really well. It is efficient enough that it can also function in passive mode with no fan.
I also have the optional rubber duct to connect the passive CPU cooler to the case fan.
The 140mm fan is super quiet because I barely have it spinning at all.
$50 https://www.amazon.com/Thermalright-814256001052-Macho-Rev-B/dp/B00PKJ21LW