If you are usa based I can build you a modded s9.
uses an apw3++ psu which will work on 120 volts.
Runs braiins firmware
you can set it to 3,4,5,6,7,8,9 th
higher the louder.
You can control the fan speed as low as 1800 as high as 5200
5th setting is pretty quiet. pulls about 400 watts
I could ship it by tuesday.
I have a thread 🧵 in hardware.
here is a modded s9 with braiins near top speed.
volts set to 8.85
freq set to 625
fan set to 80% about 5120 rpm note max chip temp is 85C
does 9 th.
it should pull close to 850 watts
it should work on 120 volt power
uses Bitmain apw3++ psu
only 1 fan to save on watts
this is a loud setting
Same rig lower settings
volts set to 8.15
freq set to 325
fan set to 18% about 2300 rpm please note max chip temp is under 78c
does 4.7 th
it should pull close to 400 watts
it will work on 120 volts
uses Bitmain apw3++ psu
only 1 fan to save watts
this is fairly quiet setting.
For introduction these are pretty good.
For changing speed these are super good.
You can't go over the 9th safely but you can drop lower the the 4.8 th I show for the low setting.
Freq can set to 200 and volts to 7.9 the low I did was at freq 325 and volts at 8.15