Antminer S21+ vs MicroBT Whatsminer M32S
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21+ | Specification | MicroBT Whatsminer M32S |
|---|---|---|
| 216.0 TH/s | Hashrate | 66.0 TH/s |
| 3,564 W | Power Consumption | 3,432 W |
| 16.5 J/TH | Efficiency | 52.0 J/TH |
| 75 dB | Noise Level | — |
| 15.0 kg | Weight | — |
| 12,160 BTU/hr | BTU Output | 11,710 BTU/hr |
| 30/100 | Home Mining Score | 22/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Antminer S21+
MicroBT Whatsminer M32S
Based on BTC price of $76,982 and current network difficulty as of May 18, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Antminer S21+, which leads on 5 of 6 weighted factors (efficiency, hashrate, home mining score, noise level, price-performance). Where it pulls away hardest is 227% more hashrate (216.0 vs 66.0 TH/s). The MicroBT Whatsminer M32S claws back ground on power consumption. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
Stripped to the numbers, this is how far apart the Antminer S21+ and MicroBT Whatsminer M32S sit on each measurable spec:
- Antminer S21+ 227% more hashrate (216.0 vs 66.0 TH/s)
- MicroBT Whatsminer M32S 4% better power draw (3,564 vs 3,432 W)
- Antminer S21+ 68% better efficiency (16.5 vs 52.0 J/TH)
- Antminer S21+ 4% more heat output (12,160 vs 11,710 BTU/hr)
- Antminer S21+ 36% more home mining score (30.0 vs 22.0)
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.
| Antminer S21+ | Metric | MicroBT Whatsminer M32S |
|---|---|---|
| $6,500 | Upfront cost (MSRP) | $5,500 |
| -$0.90 | Daily net profit | -$5.90 |
| -$6,829 | Net after 1 year | -$7,653 |
| -$7,158 | Net after 2 years | -$9,806 |
| -$7,487 | Net after 3 years | -$11,959 |
| Does not pay back at current rates (negative daily profit) | Payback period | Does not pay back at current rates (negative daily profit) |
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
TieBoth miners produce similar daily profit.
Best for Home Mining
Antminer S21+Score: 30/100. 75 dB noise level.
Best for Efficiency
Antminer S21+16.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Antminer S21+ vs MicroBT Whatsminer M32S: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21+ is more profitable at $-0.90/day compared to $-5.90/day for the MicroBT Whatsminer M32S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Antminer S21+ or the MicroBT Whatsminer M32S better for noise-sensitive spaces?
The Antminer S21+ is quieter at 75 dB compared to the MicroBT Whatsminer M32S at 0 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Antminer S21+ or the MicroBT Whatsminer M32S?
The Antminer S21+ scores 30/100 on our Home Mining Score (vs 22/100 for the MicroBT Whatsminer M32S). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
How far apart are the Antminer S21+ and MicroBT Whatsminer M32S on J/TH?
The Antminer S21+ runs at 16.5 J/TH while the MicroBT Whatsminer M32S runs at 52.0 J/TH — a difference of 35.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 68% better efficiency (16.5 vs 52.0 J/TH).
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