Bitmain Antminer S21 (200Th) vs MicroBT WhatsMiner M76
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 (200Th) | Specification | MicroBT WhatsMiner M76 |
|---|---|---|
| 200.0 TH/s | Hashrate | 354.0 TH/s |
| 3,550 W | Power Consumption | 5,133 W |
| 17.8 J/TH | Efficiency | 14.5 J/TH |
| — | Noise Level | 75 dB |
| 14.2 kg | Weight | 18.0 kg |
| 12,113 BTU/hr | BTU Output | 17,514 BTU/hr |
| 16/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Bitmain Antminer S21 (200Th)
MicroBT WhatsMiner M76
Based on BTC price of $79,032 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the MicroBT WhatsMiner M76 wins on 4 of 5 factors (efficiency, hashrate, home mining score, noise level). Where it pulls away hardest is 77% more hashrate (200 vs 354 TH/s). That said, the Bitmain Antminer S21 (200Th) isn't beaten everywhere — it still wins power consumption. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
Here is every spec where the Bitmain Antminer S21 (200Th) and MicroBT WhatsMiner M76 actually differ, with the gap quantified:
- MicroBT WhatsMiner M76 77% more hashrate (200 vs 354 TH/s)
- Bitmain Antminer S21 (200Th) 31% better power draw (3,550 vs 5,133 W)
- MicroBT WhatsMiner M76 18% better efficiency (17.8 vs 14.5 J/TH)
- Bitmain Antminer S21 (200Th) 21% better weight (14.2 vs 18.0 kg)
- MicroBT WhatsMiner M76 45% more heat output (12,113 vs 17,514 BTU/hr)
- MicroBT WhatsMiner M76 88% more home mining score (16.0 vs 30.0)
Cost & ROI Over Time
A miner pays for itself in profit, not specs. These projections track upfront cost against one, two and three years of net earnings at $0.10/kWh.
| Bitmain Antminer S21 (200Th) | Metric | MicroBT WhatsMiner M76 |
|---|---|---|
| $1,076 | Upfront cost (MSRP) | — |
| -$1.25 | Daily net profit | $0.56 |
| -$1,531 | Net after 1 year | +$203 |
| -$1,986 | Net after 2 years | +$406 |
| -$2,440 | Net after 3 years | +$608 |
| Does not pay back at current rates (negative daily profit) | Payback period | — |
Projections assume continuous operation, a flat $0.10/kWh rate, and no hardware degradation, pool fees, or BTC price change. Real-world ROI varies.
Best For...
Best for Profitability
MicroBT WhatsMiner M76$1.80/day higher profit at current rates.
Best for Home Mining
MicroBT WhatsMiner M76Score: 30/100. 75 dB noise level.
Best for Efficiency
MicroBT WhatsMiner M7614.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Bitmain Antminer S21 (200Th) or the MicroBT WhatsMiner M76?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT WhatsMiner M76 is more profitable at $0.56/day compared to $-1.25/day for the Bitmain Antminer S21 (200Th). 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 MicroBT WhatsMiner M76?
The MicroBT WhatsMiner M76 is quieter at 75 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 MicroBT WhatsMiner M76?
The MicroBT WhatsMiner M76 scores 30/100 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 MicroBT WhatsMiner M76?
The Bitmain Antminer S21 (200Th) runs at 17.8 J/TH while the MicroBT WhatsMiner M76 runs at 14.5 J/TH — a difference of 3.3 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 18% better efficiency (17.8 vs 14.5 J/TH).