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Bitmain Antminer S21+ Hyd (358Th)

Bitmain Antminer S21+ Hyd (358Th)

Hashrate 358.0 TH/s Power 5,370 W Efficiency 15.0 J/TH
VS

MicroBT WhatsMiner M78S

Hashrate 498.0 TH/s Power 6,723 W Efficiency 13.5 J/TH

Bitmain Antminer S21+ Hyd (358Th) vs MicroBT WhatsMiner M78S

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

Specifications Comparison

Bitmain Antminer S21+ Hyd (358Th) Specification MicroBT WhatsMiner M78S
358.0 TH/s Hashrate 498.0 TH/s
5,370 W Power Consumption 6,723 W
15.0 J/TH Efficiency 13.5 J/TH
50 dB Noise Level 75 dB
12.8 kg Weight 18.0 kg
18,322 BTU/hr BTU Output 22,939 BTU/hr
44/100 Home Mining Score 30/100
— Release Year —
SHA-256 Algorithm SHA-256
Bitmain Manufacturer MicroBT

Profitability Comparison

$/kWh

Bitmain Antminer S21+ Hyd (358Th)

Daily Revenue 0.00015516 BTC $10.91
Daily Electricity -$12.89
Daily Profit -$1.98
Monthly -$59.38
Yearly -$722.50

MicroBT WhatsMiner M78S

Daily Revenue 0.00021584 BTC $15.17
Daily Electricity -$16.14
Daily Profit -$0.96
Monthly -$28.82
Yearly -$350.68

Based on BTC price of $70,303 and current network difficulty as of Mar 24, 2026. Actual results vary.

Verdict

Based on our multi-factor analysis, the MicroBT WhatsMiner M78S wins on 2 of 5 factors (efficiency, hashrate). The Bitmain Antminer S21+ Hyd (358Th) 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: MicroBT WhatsMiner M78S — wins on 3 of 5 factors

Best For...

Best for Profitability

Tie

Both miners produce similar daily profit.

Best for Home Mining

Bitmain Antminer S21+ Hyd (358Th)

Score: 44/100. 50 dB noise level.

Best for Efficiency

MicroBT WhatsMiner M78S

13.5 J/TH — lower electricity cost per terahash.

Frequently Asked Questions

Is the Bitmain Antminer S21+ Hyd (358Th) or MicroBT WhatsMiner M78S more profitable?

At the current BTC price and a $0.10/kWh electricity rate, the MicroBT WhatsMiner M78S is more profitable at $-0.96/day compared to $-1.98/day for the Bitmain Antminer S21+ Hyd (358Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.

Which is quieter, the Bitmain Antminer S21+ Hyd (358Th) or MicroBT WhatsMiner M78S?

The Bitmain Antminer S21+ Hyd (358Th) is quieter at 50 dB compared to the MicroBT WhatsMiner M78S at 75 dB. For home mining, lower noise levels make a significant difference in livability.

Which is better for home mining, the Bitmain Antminer S21+ Hyd (358Th) or MicroBT WhatsMiner M78S?

The Bitmain Antminer S21+ Hyd (358Th) scores 44/100 on our Home Mining Score (vs 30/100 for the MicroBT WhatsMiner M78S). 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+ Hyd (358Th) and MicroBT WhatsMiner M78S?

The Bitmain Antminer S21+ Hyd (358Th) runs at 15.0 J/TH while the MicroBT WhatsMiner M78S runs at 13.5 J/TH — a difference of 1.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.

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