Antminer S21 XP vs Bitmain Antminer S7
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21 XP | Specification | Bitmain Antminer S7 |
|---|---|---|
| 270.0 TH/s | Hashrate | 4.7 TH/s |
| 3,645 W | Power Consumption | 1,293 W |
| 13.5 J/TH | Efficiency | 273.4 J/TH |
| 75 dB | Noise Level | — |
| 15.4 kg | Weight | 3,900.0 kg |
| 12,437 BTU/hr | BTU Output | 4,412 BTU/hr |
| 30/100 | Home Mining Score | 31/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer S21 XP
Bitmain Antminer S7
Based on BTC price of $79,086 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Weighing six performance factors, the Antminer S21 XP comes out ahead — it takes 3 of 5 (efficiency, hashrate, noise level). Where it pulls away hardest is 5608% more hashrate (270.0 vs 4.7 TH/s). That said, the Bitmain Antminer S7 isn't beaten everywhere — it still wins power consumption and home mining score. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
Stripped to the numbers, this is how far apart the Antminer S21 XP and Bitmain Antminer S7 sit on each measurable spec:
- Antminer S21 XP 5608% more hashrate (270.0 vs 4.7 TH/s)
- Bitmain Antminer S7 65% better power draw (3,645 vs 1,293 W)
- Antminer S21 XP 95% better efficiency (13.5 vs 273.4 J/TH)
- Antminer S21 XP 100% better weight (15.4 vs 3,900.0 kg)
- Antminer S21 XP 182% more heat output (12,437 vs 4,412 BTU/hr)
- Bitmain Antminer S7 3% more home mining score (30.0 vs 31.0)
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 S7 |
|---|---|---|
| $8,200 | Upfront cost (MSRP) | — |
| $1.08 | Daily net profit | -$2.93 |
| -$7,806 | Net after 1 year | -$1,070 |
| -$7,413 | Net after 2 years | -$2,140 |
| -$7,019 | Net after 3 years | -$3,210 |
| Takes ~20.8 years to pay back at current rates | 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
Antminer S21 XP$4.01/day higher profit at current rates.
Best for Home Mining
Bitmain Antminer S7Score: 31/100. 0 dB noise level.
Best for Efficiency
Antminer S21 XP13.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Antminer S21 XP or the Bitmain Antminer S7?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 XP is more profitable at $1.08/day compared to $-2.93/day for the Bitmain Antminer S7. 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 S7 better for noise-sensitive spaces?
The Antminer S21 XP is quieter at 75 dB compared to the Bitmain Antminer S7 at 0 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 S7?
The Bitmain Antminer S7 scores 31/100 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.
How far apart are the Antminer S21 XP and Bitmain Antminer S7 on J/TH?
The Antminer S21 XP runs at 13.5 J/TH while the Bitmain Antminer S7 runs at 273.4 J/TH — a difference of 259.9 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 95% better efficiency (13.5 vs 273.4 J/TH).