Compare Bitmain Antminer S21+ vs 21energy Ofen 2

The Bitmain Antminer S21+ generates higher daily profit of $0.27 compared to $-0.60 from the 21energy Ofen 2. This superior profitability comes from its optimized power-to-hashrate ratio and current electricity costs at $0.080 per kWh. Power consumption analysis reveals the Bitmain Antminer S21+ requires 3712W compared to 1000W for the 21energy Ofen 2. This 2,712W difference translates to approximately $5.21 additional daily electricity costs, which significantly impacts long-term profitability especially during periods of lower mining rewards.

Release timeline shows the Bitmain Antminer S21+ launched in June 2025 while the 21energy Ofen 2 entered the market in April 2026. Newer miners typically incorporate improved chip architecture and manufacturing processes, leading to better efficiency and performance characteristics. Physical dimensions comparison reveals the Bitmain Antminer S21+ measures 400 x 195 x 290mm while the 21energy Ofen 2 has dimensions of 900 x 320 x 140mm. Size considerations directly impact rack density, shipping costs, and facility space requirements for mining operations. Acoustic performance differs with the Bitmain Antminer S21+ operating at 75db versus 35db for the 21energy Ofen 2. Noise levels significantly impact placement options, with quieter units suitable for residential or office environments while louder miners require dedicated facilities with proper sound isolation. Humidity specifications indicate the Bitmain Antminer S21+ operates within 5 - 95 % conditions compared to 5 - 95 % for the 21energy Ofen 2. Better humidity tolerance enables deployment in more diverse geographic locations and reduces the need for expensive climate control systems in mining facilities.

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