Antminer S21 vs Antminer S23 Hyd 3U

We are comparing two devices from Bitmain — models Antminer S21 (February 2024) and Antminer S23 Hyd 3U (January 2026). The unified algorithm (SHA-256) allows switching between coins (BitcoinSV, Bitcoin, Fractal Bitcoin, Bitcoin Cash, Terracoin, Namecoin) on both ASICs, but maximum profit is currently achieved when mining BitcoinSV. The Antminer S21 device from Bitmain is available in a wide range of powers. Versions from 151Th to 200Th are available. Model Antminer S23 Hyd 3U from manufacturer Bitmain is a unique solution with 1.16Ph power, available in a single version. The difference in 960 Th shows the advantage of one model, but it's also worth paying attention to the efficiency of the models. Model Antminer S21 has an efficiency of 17.5 j/Th and Antminer S23 Hyd 3U has 9500 j/Ph. The power consumption of Bitmain Antminer S21 200Th is 3500 Watts. Bitmain Antminer S23 Hyd 3U 1.16Ph, in turn, consumes 11020 Watts. Miner Antminer S21 (Air) will significantly differ in noise level from Antminer S23 Hyd 3U (Hydro). 27 ads found for Bitmain Antminer S21. The current cost for 200Th power is from 780 USDT. Both new and used devices are available. Compare 5 offers for Bitmain Antminer S23 Hyd 3U from verified suppliers. Right now, the 1.16Ph configuration can be purchased at the minimum price of 2000000 RUB.