https://www.cryptocloaks.com/the-future-of-space-heaters-s9-bitcoin-asic/

Instead of those $30 big noctuas just get a couple of these:

Should be less than $10 each:

ARCTIC P12 PWM PST https://a.co/d/7KZuh5P

You don’t have to re-wire the connector just snip off the plastic bits on the S9 control board.

The Arctic fans will run 500 watts silently

Also get the little fan for that power supply

Noctua NF-A6x25 FLX, Premium Quiet Fan, 3-Pin (60mm, Brown) https://a.co/d/6TYR5dz

You have to solder the wires or buy the adapter in the Guide for the psu fan.

I run my S9 in the living room for heating 🫡