Antminer S21 XP vs Bitmain Antminer S21 XP Hyd
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21 XP | Specification | Bitmain Antminer S21 XP Hyd |
|---|---|---|
| 270.0 TH/s | Hashrate | 473.0 TH/s |
| 3,645 W | Power Consumption | 5,676 W |
| 13.5 J/TH | Efficiency | 12.0 J/TH |
| 75 dB | Noise Level | 50 dB |
| 15.4 kg | Weight | 12.3 kg |
| 12,437 BTU/hr | BTU Output | 19,367 BTU/hr |
| 30/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer S21 XP
Bitmain Antminer S21 XP Hyd
Based on BTC price of $79,227 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitmain Antminer S21 XP Hyd, which leads on 5 of 6 weighted factors (efficiency, hashrate, home mining score, noise level, price-performance). The standout gap is 75% more hashrate (270 vs 473 TH/s) in the Bitmain Antminer S21 XP Hyd's favour. The Antminer S21 XP 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 XP and Bitmain Antminer S21 XP Hyd sit on each measurable spec:
- Bitmain Antminer S21 XP Hyd 75% more hashrate (270 vs 473 TH/s)
- Antminer S21 XP 36% better power draw (3,645 vs 5,676 W)
- Bitmain Antminer S21 XP Hyd 11% better efficiency (13.5 vs 12.0 J/TH)
- Bitmain Antminer S21 XP Hyd 33% better noise (75.0 vs 50.0 dB)
- Bitmain Antminer S21 XP Hyd 20% better weight (15.4 vs 12.3 kg)
- Bitmain Antminer S21 XP Hyd 56% more heat output (12,437 vs 19,367 BTU/hr)
- Bitmain Antminer S21 XP Hyd 47% more home mining score (30.0 vs 44.0)
Cost & ROI Over Time
Hardware cost is only half the story — here is how each miner's upfront price plays out against cumulative profit at a $0.10/kWh rate.
| Antminer S21 XP | Metric | Bitmain Antminer S21 XP Hyd |
|---|---|---|
| $8,200 | Upfront cost (MSRP) | $5,099 |
| $1.40 | Daily net profit | $4.16 |
| -$7,688 | Net after 1 year | -$3,580 |
| -$7,176 | Net after 2 years | -$2,061 |
| -$6,664 | Net after 3 years | -$543 |
| Takes ~16.0 years to pay back at current rates | Payback period | Takes ~3.4 years to pay back at current rates |
At the default rate, the Bitmain Antminer S21 XP Hyd reaches break-even first — but plug in your own electricity cost above, since payback shifts sharply with it.
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
Bitmain Antminer S21 XP Hyd$2.76/day higher profit at current rates.
Best for Home Mining
Bitmain Antminer S21 XP HydScore: 44/100. 50 dB noise level.
Best for Efficiency
Bitmain Antminer S21 XP Hyd12.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Antminer S21 XP or the Bitmain Antminer S21 XP Hyd?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 XP Hyd is more profitable at $4.16/day compared to $1.40/day for the Antminer S21 XP. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Antminer S21 XP or the Bitmain Antminer S21 XP Hyd better for noise-sensitive spaces?
The Bitmain Antminer S21 XP Hyd is quieter at 50 dB compared to the Antminer S21 XP at 75 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Antminer S21 XP or Bitmain Antminer S21 XP Hyd?
The Bitmain Antminer S21 XP Hyd scores 44/100 on our Home Mining Score (vs 30/100 for the Antminer S21 XP). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Antminer S21 XP vs Bitmain Antminer S21 XP Hyd: how much does the efficiency gap matter?
The Antminer S21 XP runs at 13.5 J/TH while the Bitmain Antminer S21 XP Hyd runs at 12.0 J/TH — a difference of 1.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 11% better efficiency (13.5 vs 12.0 J/TH).