Bitmain Antminer S21 (200Th)

Hashrate 200.0 TH/s Power 3,550 W Efficiency 17.8 J/TH

Whatsminer M30S++ (Hydro)

Hashrate 112.0 TH/s Power 3,472 W Efficiency 31.0 J/TH

Bitmain Antminer S21 (200Th) vs Whatsminer M30S++ (Hydro)

Side-by-side specs, profitability, and home mining comparison.

Specifications Comparison

Bitmain Antminer S21 (200Th)	Specification	Whatsminer M30S++ (Hydro)
200.0 TH/s	Hashrate	112.0 TH/s
3,550 W	Power Consumption	3,472 W
17.8 J/TH	Efficiency	31.0 J/TH
—	Noise Level	50 dB
14.2 kg	Weight	12.0 kg
12,113 BTU/hr	BTU Output	11,847 BTU/hr
16/100	Home Mining Score	50/100
—	Release Year	—
SHA-256	Algorithm	SHA-256
Bitmain	Manufacturer	MicroBT

Profitability Comparison

Electricity Rate:

$/kWh

Bitmain Antminer S21 (200Th)

Daily Revenue 0.00008668 BTC $6.17

Daily Electricity -$8.52

Daily Profit -$2.35

Monthly -$70.49

Yearly -$857.59

Whatsminer M30S++ (Hydro)

Daily Revenue 0.00004854 BTC $3.46

Daily Electricity -$8.33

Daily Profit -$4.88

Monthly -$146.32

Yearly -$1,780.23

Based on BTC price of $71,183 and current network difficulty as of Mar 25, 2026. Actual results vary.

Verdict

Based on our multi-factor analysis, the Bitmain Antminer S21 (200Th) wins on 3 of 6 factors (efficiency, hashrate, price-performance). The Whatsminer M30S++ (Hydro) holds the edge in power consumption and home mining score and noise level. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.

Winner: Bitmain Antminer S21 (200Th) — wins on 3 of 6 factors

Best For...

Best for Profitability

Tie

Both miners produce similar daily profit.

Best for Home Mining

Whatsminer M30S++ (Hydro)

Score: 50/100. 50 dB noise level.

Best for Efficiency

Bitmain Antminer S21 (200Th)

17.8 J/TH — lower electricity cost per terahash.

Frequently Asked Questions

Is the Bitmain Antminer S21 (200Th) or Whatsminer M30S++ (Hydro) more profitable?

At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 (200Th) is more profitable at $-2.35/day compared to $-4.88/day for the Whatsminer M30S++ (Hydro). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.

Which is quieter, the Bitmain Antminer S21 (200Th) or Whatsminer M30S++ (Hydro)?

The Whatsminer M30S++ (Hydro) is quieter at 50 dB compared to the Bitmain Antminer S21 (200Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.

Which is better for home mining, the Bitmain Antminer S21 (200Th) or Whatsminer M30S++ (Hydro)?

The Whatsminer M30S++ (Hydro) scores 50/100 on our Home Mining Score (vs 16/100 for the Bitmain Antminer S21 (200Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.

What is the efficiency difference between Bitmain Antminer S21 (200Th) and Whatsminer M30S++ (Hydro)?

The Bitmain Antminer S21 (200Th) runs at 17.8 J/TH while the Whatsminer M30S++ (Hydro) runs at 31.0 J/TH — a difference of 13.3 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.

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