Bitmain Antminer S19 XP Hyd (257Th) vs MicroBT Whatsminer M21S
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S19 XP Hyd (257Th) | Specification | MicroBT Whatsminer M21S |
|---|---|---|
| 257.0 TH/s | Hashrate | 56.0 TH/s |
| 5,346 W | Power Consumption | 3,360 W |
| 20.8 J/TH | Efficiency | 60.0 J/TH |
| — | Noise Level | — |
| — | Weight | 12,500.0 kg |
| 18,241 BTU/hr | BTU Output | 11,464 BTU/hr |
| 16/100 | Home Mining Score | 22/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Bitmain Antminer S19 XP Hyd (257Th)
MicroBT Whatsminer M21S
Based on BTC price of $79,071 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Bitmain Antminer S19 XP Hyd (257Th) edges it: 3 of 5 factors go its way (efficiency, hashrate, price-performance). The standout gap is 359% more hashrate (257.0 vs 56.0 TH/s) in the Bitmain Antminer S19 XP Hyd (257Th)'s favour. The MicroBT Whatsminer M21S holds the edge in power consumption and home mining score. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Here is every spec where the Bitmain Antminer S19 XP Hyd (257Th) and MicroBT Whatsminer M21S actually differ, with the gap quantified:
- Bitmain Antminer S19 XP Hyd (257Th) 359% more hashrate (257.0 vs 56.0 TH/s)
- MicroBT Whatsminer M21S 37% better power draw (5,346 vs 3,360 W)
- Bitmain Antminer S19 XP Hyd (257Th) 65% better efficiency (20.8 vs 60.0 J/TH)
- Bitmain Antminer S19 XP Hyd (257Th) 59% more heat output (18,241 vs 11,464 BTU/hr)
- MicroBT Whatsminer M21S 38% more home mining score (16.0 vs 22.0)
Cost & ROI Over Time
Sticker price versus what the miner actually earns back: the table below projects cumulative net profit at a $0.10/kWh electricity rate.
| Bitmain Antminer S19 XP Hyd (257Th) | Metric | MicroBT Whatsminer M21S |
|---|---|---|
| $1,059 | Upfront cost (MSRP) | $650 |
| -$3.19 | Daily net profit | -$5.96 |
| -$2,222 | Net after 1 year | -$2,826 |
| -$3,386 | Net after 2 years | -$5,003 |
| -$4,549 | Net after 3 years | -$7,179 |
| 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
MicroBT Whatsminer M21SScore: 22/100. 0 dB noise level.
Best for Efficiency
Bitmain Antminer S19 XP Hyd (257Th)20.8 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Bitmain Antminer S19 XP Hyd (257Th) vs MicroBT Whatsminer M21S: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S19 XP Hyd (257Th) is more profitable at $-3.19/day compared to $-5.96/day for the MicroBT Whatsminer M21S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S19 XP Hyd (257Th) or MicroBT Whatsminer M21S?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Bitmain Antminer S19 XP Hyd (257Th) or MicroBT Whatsminer M21S?
The MicroBT Whatsminer M21S scores 22/100 on our Home Mining Score (vs 16/100 for the Bitmain Antminer S19 XP Hyd (257Th)). 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 S19 XP Hyd (257Th) and MicroBT Whatsminer M21S?
The Bitmain Antminer S19 XP Hyd (257Th) runs at 20.8 J/TH while the MicroBT Whatsminer M21S runs at 60.0 J/TH — a difference of 39.2 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 65% better efficiency (20.8 vs 60.0 J/TH).
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