90 TH/s at 18.6 J/TH and 45 dB against 120 TH/s at 23 J/TH and 75 dB. Verified specs, the 3.8-cent crossover rate, the circuit each one actually needs, and which machine suits which buyer.

How to buy a used ASIC miner: what the condition grades really mean, how to work out landed cost per terahash, the break-even electricity rate for every used S19, and why a boosted 110 TH/s S19 is not an S19 Pro.