Bitmain Antminer S19j (90Th) vs MicroBT Whatsminer M3
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S19j (90Th) | Specification | MicroBT Whatsminer M3 |
|---|---|---|
| 90.0 TH/s | Hashrate | 12.0 TH/s |
| 3,250 W | Power Consumption | 2,000 W |
| 36.1 J/TH | Efficiency | 166.7 J/TH |
| — | Noise Level | — |
| 14,200.0 kg | Weight | 8,100.0 kg |
| 11,089 BTU/hr | BTU Output | 6,824 BTU/hr |
| 22/100 | Home Mining Score | 28/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Bitmain Antminer S19j (90Th)
MicroBT Whatsminer M3
Based on BTC price of $79,427 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Bitmain Antminer S19j (90Th) edges it: 2 of 4 factors go its way (efficiency, hashrate). The standout gap is 650% more hashrate (90.0 vs 12.0 TH/s) in the Bitmain Antminer S19j (90Th)'s favour. That said, the MicroBT Whatsminer M3 isn't beaten everywhere — it still wins power consumption and home mining score. 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 S19j (90Th) and MicroBT Whatsminer M3 sit on each measurable spec:
- Bitmain Antminer S19j (90Th) 650% more hashrate (90.0 vs 12.0 TH/s)
- MicroBT Whatsminer M3 38% better power draw (3,250 vs 2,000 W)
- Bitmain Antminer S19j (90Th) 78% better efficiency (36.1 vs 166.7 J/TH)
- MicroBT Whatsminer M3 43% better weight (14,200 vs 8,100 kg)
- Bitmain Antminer S19j (90Th) 63% more heat output (11,089 vs 6,824 BTU/hr)
- MicroBT Whatsminer M3 27% more home mining score (22.0 vs 28.0)
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 S19j (90Th) | Metric | MicroBT Whatsminer M3 |
|---|---|---|
| $405 | Upfront cost (MSRP) | — |
| -$4.41 | Daily net profit | -$4.35 |
| -$2,014 | Net after 1 year | -$1,587 |
| -$3,623 | Net after 2 years | -$3,174 |
| -$5,231 | Net after 3 years | -$4,761 |
| 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
TieBoth miners produce similar daily profit.
Best for Home Mining
MicroBT Whatsminer M3Score: 28/100. 0 dB noise level.
Best for Efficiency
Bitmain Antminer S19j (90Th)36.1 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S19j (90Th) or MicroBT Whatsminer M3 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT Whatsminer M3 is more profitable at $-4.35/day compared to $-4.41/day for the Bitmain Antminer S19j (90Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S19j (90Th) or MicroBT Whatsminer M3?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Bitmain Antminer S19j (90Th) or MicroBT Whatsminer M3?
The MicroBT Whatsminer M3 scores 28/100 on our Home Mining Score (vs 22/100 for the Bitmain Antminer S19j (90Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
How far apart are the Bitmain Antminer S19j (90Th) and MicroBT Whatsminer M3 on J/TH?
The Bitmain Antminer S19j (90Th) runs at 36.1 J/TH while the MicroBT Whatsminer M3 runs at 166.7 J/TH — a difference of 130.6 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 78% better efficiency (36.1 vs 166.7 J/TH).