You just need to use BraiinsOS to underclock it. I run mine at 800 watts. It's not to loud and puts out plenty of heat. If you want it quieter you can tune it lower or even try swapping the fans for quieter ones.
Discussion
But where to you set the power limit? Is it under the “Autotuning” settings? Or is it under the “Global Hash Chain Settings” and “AsicBoost” settings?
Following this. I am hoping to get my hands on an S9 soon.
Feel free to ask any questions 🤝