Antminer T21 vs Block Proto Rig
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer T21 | Specification | Block Proto Rig |
|---|---|---|
| 190.0 TH/s | Hashrate | 819.0 TH/s |
| 3,610 W | Power Consumption | 12,000 W |
| 19.0 J/TH | Efficiency | 14.7 J/TH |
| 75 dB | Noise Level | 80 dB |
| 14.6 kg | Weight | — |
| 12,317 BTU/hr | BTU Output | 40,944 BTU/hr |
| 30/100 | Home Mining Score | — |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Block Inc |
Profitability Comparison
Antminer T21
Block Proto Rig
Based on BTC price of $77,932 and current network difficulty as of May 21, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Block Proto Rig edges it: 2 of 5 factors go its way (efficiency, hashrate). Its biggest concrete edge: 331% more hashrate (190 vs 819 TH/s). The Antminer T21 claws back ground on power consumption and home mining score and noise level. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
Here is every spec where the Antminer T21 and Block Proto Rig actually differ, with the gap quantified:
- Block Proto Rig 331% more hashrate (190 vs 819 TH/s)
- Antminer T21 70% better power draw (3,610 vs 12,000 W)
- Block Proto Rig 23% better efficiency (19.0 vs 14.7 J/TH)
- Antminer T21 6% better noise (75.0 vs 80.0 dB)
- Block Proto Rig 232% more heat output (12,317 vs 40,944 BTU/hr)
Cost & ROI Over Time
Sticker price versus what the miner actually earns back: the table below projects cumulative net profit at a $0.10/kWh electricity rate.
| Antminer T21 | Metric | Block Proto Rig |
|---|---|---|
| $4,200 | Upfront cost (MSRP) | — |
| -$1.85 | Daily net profit | $0.57 |
| -$4,875 | Net after 1 year | +$209 |
| -$5,551 | Net after 2 years | +$417 |
| -$6,226 | Net after 3 years | +$626 |
| Does not pay back at current rates (negative daily profit) | 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
Block Proto Rig$2.42/day higher profit at current rates.
Best for Home Mining
Antminer T21Score: 30/100. 75 dB noise level.
Best for Efficiency
Block Proto Rig14.7 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Antminer T21 or the Block Proto Rig?
At the current BTC price and a $0.10/kWh electricity rate, the Block Proto Rig is more profitable at $0.57/day compared to $-1.85/day for the Antminer T21. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Antminer T21 or Block Proto Rig?
The Antminer T21 is quieter at 75 dB compared to the Block Proto Rig at 80 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Antminer T21 or Block Proto Rig?
The Antminer T21 scores 30/100 on our Home Mining Score (vs 0/100 for the Block Proto Rig). 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 Antminer T21 and Block Proto Rig?
The Antminer T21 runs at 19.0 J/TH while the Block Proto Rig runs at 14.7 J/TH — a difference of 4.4 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 23% better efficiency (19.0 vs 14.7 J/TH).