Thanks for answers. At stock firmware working temperature was 70*C. In braiin OS my miner is taged as "Antminer S19J88". Is 70*C really hot temperature for this model? Where can I find documentation exacly for this model?

In Google when i type "Antminer S19J88" I see nothing

Hi,

how I can safe overclock my S19 90TH in BraiinOS? Overclock I mean "increase power = more hash rate"

Just increase value in "Power Target (for all hashboards)"?

What is safe value? Now I have 3150W, temps are 65.00 °C @ Hashrate 24H   91.82TH/s, fans are running at 82%.