Antminer S19 XP vs Antminer S21
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S19 XP | Specification | Antminer S21 |
|---|---|---|
| 140.0 TH/s | Hashrate | 200.0 TH/s |
| 3,010 W | Power Consumption | 3,500 W |
| 21.5 J/TH | Efficiency | 17.5 J/TH |
| 75 dB | Noise Level | 75 dB |
| 14.4 kg | Weight | 14.6 kg |
| 10,270 BTU/hr | BTU Output | 11,942 BTU/hr |
| 84/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer S19 XP
Antminer S21
Based on BTC price of $78,250 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
The S19 XP was the final evolution of the S19 generation, pushing efficiency to its limits. The S21 represents an entirely new generation. How much has changed?
The S21 delivers a meaningful efficiency leap over even the XP variant. However, the S19 XP remains one of the best miners of its generation and can be found at steep discounts on the secondary market, making it competitive on ROI.
Spec Deltas
The Antminer S19 XP and Antminer S21 diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Antminer S21 43% more hashrate (140 vs 200 TH/s)
- Antminer S19 XP 14% better power draw (3,010 vs 3,500 W)
- Antminer S21 19% better efficiency (21.5 vs 17.5 J/TH)
- Antminer S19 XP 1% better weight (14.4 vs 14.6 kg)
- Antminer S21 16% more heat output (10,270 vs 11,942 BTU/hr)
- Antminer S19 XP 133% more home mining score (84.0 vs 36.0)
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 S19 XP | Metric | Antminer S21 |
|---|---|---|
| $4,500 | Upfront cost (MSRP) | $5,500 |
| -$2.18 | Daily net profit | -$1.20 |
| -$5,297 | Net after 1 year | -$5,937 |
| -$6,093 | Net after 2 years | -$6,375 |
| -$6,890 | Net after 3 years | -$6,812 |
| 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 S19 XPScore: 84/100. 75 dB noise level.
Best for Efficiency
Antminer S2117.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Should I upgrade from an S19 XP to an S21?
If your electricity is above $0.07/kWh, the S21's efficiency gains will likely justify the upgrade cost over 12-18 months. At cheaper rates, the XP remains highly profitable.
Is the S19 XP still worth buying in 2026?
At the right price, absolutely. The S19 XP's efficiency was top-tier for its generation and it remains profitable at moderate electricity rates. It is a strong used-market buy.