Antminer S21 Imm vs Antminer S23

We are comparing two devices from Bitmain — models Antminer S21 Imm (December 2024) and Antminer S23 (January 2026). The unified algorithm (SHA-256) allows switching between coins (Bitcoin Cash, Bitcoin, Fractal Bitcoin, BitcoinSV, Terracoin, Namecoin) on both ASICs, but maximum profit is currently achieved when mining Bitcoin Cash. Bitmain Antminer S21 Imm is released in a single version with 301Th. Choose the right Antminer S23 version for your needs from 2 options with power ranging from 296Th to 318Th inclusive. The difference in 17 Th shows the advantage of one model, but it's also worth paying attention to the efficiency of the models. Model Antminer S21 Imm has an efficiency of 18.5 j/Th and Antminer S23 has 11 j/Th. The power consumption of Bitmain Antminer S21 Imm 301Th is 5568.5 Watts. Bitmain Antminer S23 318Th, in turn, consumes 3498 Watts. Miner Antminer S21 Imm (Immersion) will significantly differ in noise level from Antminer S23 (Air). Offers for Bitmain Antminer S21 Imm are temporarily unavailable, but our catalog contains many other profitable models. 12 active listings available for Bitmain Antminer S23. The best price-to-performance ratio: 318Th for 533000 RUB.