Sorry that image is the fan for the power unit. Same ‘Noctua’ brand for the 140mm 3000 RPM fans on each side. Replace all of them ie rig and psu for a huge difference.

I got these recommended in the @CryptoCloaks™ space heater guide. Haven’t disappointed. Smooth, efficient and quiet. Oh, and really easy to install. Just make sure you use the recommended screw length as some lengths could damage the hash boards without knowing.

Love you can plug S9s into a standard outlet and heat a room in the winter. If noise is too much, a fan upgrade is key and wife approved 😊

You make so much sense