On my diamond blue I run Noctua NF-A15. 12V .96watt .08amp 1200 rpm with Noctua’s SS02 metal bearings. Bolt pattern is perfect and I just splice in the new fan connector into the existing supply. So freaking quiet. FWI...noctua is not the cheap route, it’s the $$$ route as far as fans go....is airflow really where any of us collectors should be saving money.