Description
The Antminer S21 XP is Bitmain’s 2024 air-cooled flagship for Bitcoin. At 270 TH/s and 13.5 J/TH it sits at the efficiency frontier for non-hydro hardware, making it the default recommendation for serious home and small-commercial setups with electricity at $0.06–$0.10/kWh.
Key specs: BM1370 chips, 3645 W typical draw, dual hashboards, dual 7000 rpm fans (about 75 dB at full load). Manufacturer warranty is 180 days; we add escrow on first orders for buyer protection.
Best for: 1–10 unit operations with adequate ventilation and a 240 V / 30 A circuit available.
