Replaced 3 Zalman fans in my case that were trying to increase airflow and they gave despite having the same 1350rpm rating. When playing Fortnite on 2700x and rx590 Fatboy with unlimited framerate, the top of the case got very hot. Time will tell how reliable they are and with only a 3 pin MB connector I can't comment on the temp. Control. I've had unbranded Chinese fans that lasted less than 2 years so hopefully they will be better.
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