Bitmain Antminer T17 (40Th) vs Whatsminer M66S
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer T17 (40Th) | Specification | Whatsminer M66S |
|---|---|---|
| 40.0 TH/s | Hashrate | 298.0 TH/s |
| 2,200 W | Power Consumption | 5,518 W |
| 55.0 J/TH | Efficiency | 18.5 J/TH |
| — | Noise Level | 50 dB |
| 11,500.0 kg | Weight | 13.5 kg |
| 7,506 BTU/hr | BTU Output | 18,827 BTU/hr |
| 26/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Bitmain Antminer T17 (40Th)
Whatsminer M66S
Based on BTC price of $79,051 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Whatsminer M66S edges it: 4 of 6 factors go its way (efficiency, hashrate, home mining score, noise level). Its biggest concrete edge: 645% more hashrate (40.0 vs 298.0 TH/s). The Bitmain Antminer T17 (40Th) holds the edge in power consumption and price-performance. 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 Bitmain Antminer T17 (40Th) and Whatsminer M66S sit on each measurable spec:
- Whatsminer M66S 645% more hashrate (40.0 vs 298.0 TH/s)
- Bitmain Antminer T17 (40Th) 60% better power draw (2,200 vs 5,518 W)
- Whatsminer M66S 66% better efficiency (55.0 vs 18.5 J/TH)
- Whatsminer M66S 100% better weight (11,500.0 vs 13.5 kg)
- Whatsminer M66S 151% more heat output (7,506 vs 18,827 BTU/hr)
- Whatsminer M66S 69% more home mining score (26.0 vs 44.0)
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.
| Bitmain Antminer T17 (40Th) | Metric | Whatsminer M66S |
|---|---|---|
| $155 | Upfront cost (MSRP) | $8,000 |
| -$3.82 | Daily net profit | -$2.40 |
| -$1,551 | Net after 1 year | -$8,877 |
| -$2,947 | Net after 2 years | -$9,754 |
| -$4,343 | Net after 3 years | -$10,631 |
| 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
Whatsminer M66SScore: 44/100. 50 dB noise level.
Best for Efficiency
Whatsminer M66S18.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Bitmain Antminer T17 (40Th) or the Whatsminer M66S?
At the current BTC price and a $0.10/kWh electricity rate, the Whatsminer M66S is more profitable at $-2.40/day compared to $-3.82/day for the Bitmain Antminer T17 (40Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitmain Antminer T17 (40Th) or the Whatsminer M66S better for noise-sensitive spaces?
The Whatsminer M66S is quieter at 50 dB compared to the Bitmain Antminer T17 (40Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Bitmain Antminer T17 (40Th) vs Whatsminer M66S: which fits a residential setup better?
The Whatsminer M66S scores 44/100 on our Home Mining Score (vs 26/100 for the Bitmain Antminer T17 (40Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Bitmain Antminer T17 (40Th) vs Whatsminer M66S: how much does the efficiency gap matter?
The Bitmain Antminer T17 (40Th) runs at 55.0 J/TH while the Whatsminer M66S runs at 18.5 J/TH — a difference of 36.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 66% better efficiency (55.0 vs 18.5 J/TH).