Antminer D7 vs Antminer T21
Side-by-side specs, profitability, and home mining comparison.
Quick verdict
For most buyers the Antminer T21 is the stronger pick — it leads on 3 of 6 head-to-head factors. The Antminer D7 runs 1,286.0 GH/s; the Antminer T21 runs 190.0 TH/s.
Specs verified against the D-Central Mining Bible \xc2\xb7 June 2026
Specifications Comparison
| Antminer D7 | Specification | Antminer T21 |
|---|---|---|
| 1,286.0 GH/s | Taux de hachage | 190.0 TH/s |
| 3,148 W | Consommation électrique | 3,610 W |
| 2,447.9 J/TH | Efficiency | 19.0 J/TH |
| 70 dB | Niveau de bruit | 75 dB |
| 14.4 kg | Weight | 14.6 kg |
| 10,741 BTU/hr | BTU Output | 12,317 BTU/hr |
| 13/100 | Home Mining Score | 8/100 |
| — | Release Year | — |
| X11 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer D7
Antminer T21
Based on BTC price of $64,648 and current network difficulty as of Jun 17, 2026. Actual results vary.
Verdict
Weighing six performance factors, the Antminer T21 comes out ahead — it takes 3 of 6 (efficacité, hashrate, rapport qualité-prix). Its biggest concrete edge: 14674% more hashrate (1.3 vs 190.0 TH/s). The Antminer D7 holds the edge in consommation électrique and score de minage domestique and niveau sonore. Cross-check the spec deltas and operating-cost table above against your own electricity rate before deciding.
Spec Deltas
Here is every spec where the Antminer D7 and Antminer T21 actually differ, with the gap quantified:
- Antminer T21 14674% more hashrate (1.3 vs 190.0 TH/s)
- Antminer D7 13% better power draw (3,148 vs 3,610 W)
- Antminer T21 99% better efficacité (2,447.9 vs 19.0 J/TH)
- Antminer D7 7% better noise (70.0 vs 75.0 dB)
- Antminer D7 1% better weight (14.4 vs 14.6 kg)
- Antminer T21 15% more heat output (10,741 vs 12,317 BTU/hr)
- Antminer D7 63% more score de minage domestique (13.0 vs 8.0)
Cost & ROI Over Time
A miner pays for itself in profit, not specs. These projections track upfront cost against one, two and three years of net earnings at $0.10/kWh.
| Antminer D7 | Metric | Antminer T21 |
|---|---|---|
| $2,500 | Upfront cost (MSRP) | $4,200 |
| -$7.51 | Daily net profit | -$2.48 |
| -$5,242 | Net after 1 year | -$5,106 |
| -$7,985 | Net after 2 years | -$6,013 |
| -$10,727 | Net after 3 years | -$6,919 |
| 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 D7Score: 13/100. 70 dB noise level.
Best for Efficiency
Antminer T2119.0 J/TH — lower electricity cost per terahash.
Foire aux questions
Antminer D7 vs Antminer T21: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer T21 is more profitable at $-2.48/day compared to $-7.51/day for the Antminer D7. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Antminer D7 or the Antminer T21 better for noise-sensitive spaces?
The Antminer D7 is quieter at 70 dB compared to the Antminer T21 at 75 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Antminer D7 or the Antminer T21?
The Antminer D7 scores 13/100 on our Home Mining Score (vs 8/100 for the Antminer T21). 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 D7 and Antminer T21 on J/TH?
The Antminer D7 runs at 2,447.9 J/TH while the Antminer T21 runs at 19.0 J/TH — a difference of 2,428.9 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 99% better efficacité (2,447.9 vs 19.0 J/TH).