My S9 best W/TH is at 800w.
are you burning 80 watts a th?
or 800 watts a miner.
@op
I get that free power and not laying money seems good.
but running 52th vs 126th and burning 4000 free watts vs 4200 free watts
is 74 x 8 cents or just about six dollars a day more running s17pros on low
that means 1080 usd extran in six months of s17 pro
and 2160 usd extra in one year of s17 pro on low.
are you usa based or asia based. you can get s17 pros for cheap. i would upgrade