Bitmain Antminer S19j (90Th) vs Whatsminer M63
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S19j (90Th) | Specification | Whatsminer M63 |
|---|---|---|
| 90.0 TH/s | Hashrate | 360.0 TH/s |
| 3,250 W | Power Consumption | 7,200 W |
| 36.1 J/TH | Efficiency | 20.0 J/TH |
| — | Noise Level | 50 dB |
| 14,200.0 kg | Weight | 27.5 kg |
| 11,089 BTU/hr | BTU Output | 24,566 BTU/hr |
| 22/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Bitmain Antminer S19j (90Th)
Whatsminer M63
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 Whatsminer M63 edges it: 4 of 6 factors go its way (efficiency, hashrate, home mining score, noise level). The standout gap is 300% more hashrate (90.0 vs 360.0 TH/s) in the Whatsminer M63's favour. That said, the Bitmain Antminer S19j (90Th) isn't beaten everywhere — it still wins power consumption and price-performance. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
The Bitmain Antminer S19j (90Th) and Whatsminer M63 diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Whatsminer M63 300% more hashrate (90.0 vs 360.0 TH/s)
- Bitmain Antminer S19j (90Th) 55% better power draw (3,250 vs 7,200 W)
- Whatsminer M63 45% better efficiency (36.1 vs 20.0 J/TH)
- Whatsminer M63 100% better weight (14,200.0 vs 27.5 kg)
- Whatsminer M63 122% more heat output (11,089 vs 24,566 BTU/hr)
- Whatsminer M63 100% more home mining score (22.0 vs 44.0)
Cost & ROI Over Time
Hardware cost is only half the story — here is how each miner's upfront price plays out against cumulative profit at a $0.10/kWh rate.
| Bitmain Antminer S19j (90Th) | Metric | Whatsminer M63 |
|---|---|---|
| $405 | Upfront cost (MSRP) | $11,000 |
| -$4.41 | Daily net profit | -$3.71 |
| -$2,014 | Net after 1 year | -$12,354 |
| -$3,623 | Net after 2 years | -$13,709 |
| -$5,231 | Net after 3 years | -$15,063 |
| 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 M63Score: 44/100. 50 dB noise level.
Best for Efficiency
Whatsminer M6320.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S19j (90Th) or Whatsminer M63 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Whatsminer M63 is more profitable at $-3.71/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.
Bitmain Antminer S19j (90Th) vs Whatsminer M63: which runs at a lower noise level?
The Whatsminer M63 is quieter at 50 dB compared to the Bitmain Antminer S19j (90Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Bitmain Antminer S19j (90Th) or Whatsminer M63?
The Whatsminer M63 scores 44/100 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.
What is the efficiency difference between Bitmain Antminer S19j (90Th) and Whatsminer M63?
The Bitmain Antminer S19j (90Th) runs at 36.1 J/TH while the Whatsminer M63 runs at 20.0 J/TH — a difference of 16.1 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 45% better efficiency (36.1 vs 20.0 J/TH).