WHAT DOES ANTMINER S19 90TH MEAN?

We've provided profitability calculators for the top cash which the Antminer S19 can mine - just after inputting your hashing power and energy use watts, then click on Calculate under for either BTC or BCH: In summary, Braiins OS+ brings a suite of performance enhancements to your Antminer S19 Professional, from autotuning for enhanced efficiency