Bitmain Antminer U2L9H vs BW L21
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer U2L9H | Specification | BW L21 |
|---|---|---|
| 27.0 GH/s | Hashrate | 550.0 MH/s |
| 5,670 W | Power Consumption | 950 W |
| 210,000.0 J/TH | Efficiency | 1,727,272.7 J/TH |
| 50 dB | Noise Level | — |
| 19.1 kg | Weight | 5,750.0 kg |
| 19,346 BTU/hr | BTU Output | 3,241 BTU/hr |
| 44/100 | Home Mining Score | 31/100 |
| — | Release Year | — |
| Scrypt | Algorithm | Scrypt |
| Bitmain | Manufacturer | BW |
Profitability Comparison
Bitmain Antminer U2L9H
BW L21
Based on BTC price of $74,032 and current network difficulty as of Mar 16, 2026. Actual results vary.
Verdict
Based on specs, the Bitmain Antminer U2L9H offers 88% better efficiency at 210,000.0 J/TH compared to the BW L21 at 1,727,272.7 J/TH. This directly impacts daily operating costs and long-term profitability.
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
Bitmain Antminer U2L9HScore: 44/100. 50 dB noise level.
Best for Efficiency
Bitmain Antminer U2L9H210,000.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer U2L9H or BW L21 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the BW L21 is more profitable at $-2.28/day compared to $-13.61/day for the Bitmain Antminer U2L9H. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer U2L9H or BW L21?
The Bitmain Antminer U2L9H is quieter at 50 dB compared to the BW L21 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Bitmain Antminer U2L9H or BW L21?
The Bitmain Antminer U2L9H scores 44/100 on our Home Mining Score (vs 31/100 for the BW L21). 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 U2L9H and BW L21?
The Bitmain Antminer U2L9H runs at 210,000.0 J/TH while the BW L21 runs at 1,727,272.7 J/TH — a difference of 1,517,272.7 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.