Bitmain Antminer S19 Pro multi-bin reference vs Bitmain Antminer S21 official reference
Side-by-side specs, profitability, and home mining comparison.
Quick verdict
For most buyers the Bitmain Antminer S21 official reference is the stronger pick — Roughly 40% better efficiency delivers meaningful daily profit improvement. The Bitmain Antminer S19 Pro multi-bin reference runs 105.0 TH/s at 31.0 J/TH; the Bitmain Antminer S21 official reference runs 200.0 TH/s at 17.5 J/TH.
Specs verified against the D-Central Mining Bible \xc2\xb7 August 2026
Specifications Comparison
| Bitmain Antminer S19 Pro multi-bin reference | Specification | Bitmain Antminer S21 official reference |
|---|---|---|
| 105.0 TH/s | Hashrate | 200.0 TH/s |
| 3,250 W | Power Consumption | 3,500 W |
| 31.0 J/TH | Efficiency | 17.5 J/TH |
| — | Noise Level | — |
| 13.2 kg | Weight | 15.4 kg |
| 11,089 BTU/hr | BTU Output | 11,942 BTU/hr |
| — | Home Mining Score | — |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S19 Pro multi-bin reference
Bitmain Antminer S21 official reference
Based on BTC price of $107,835 and current network difficulty as of Aug 29, 2026. Actual results vary.
Verdict
A direct generational leap from the S19 Pro to the S21. This comparison shows the real-world impact of advancing from one mining generation to the next.
The S21 offers roughly 40% better efficiency than the S19 Pro. This is a substantial improvement that dramatically affects profitability, especially at higher electricity rates. The S19 Pro is now a previous-gen workhorse heading toward end-of-life for profitable mining.
Spec Deltas
Here is every spec where the Bitmain Antminer S19 Pro multi-bin reference and Bitmain Antminer S21 official reference actually differ, with the gap quantified:
- Bitmain Antminer S21 official reference 90% more hashrate (105 vs 200 TH/s)
- Bitmain Antminer S19 Pro multi-bin reference 7% better power draw (3,250 vs 3,500 W)
- Bitmain Antminer S21 official reference 43% better efficiency (31.0 vs 17.5 J/TH)
- Bitmain Antminer S19 Pro multi-bin reference 14% better weight (13.2 vs 15.4 kg)
- Bitmain Antminer S21 official reference 8% more heat output (11,089 vs 11,942 BTU/hr)
Best For...
Best for Profitability
Bitmain Antminer S21 official reference$4.52/day higher profit at current rates.
Best for Home Mining
TieBoth miners are equally suitable for home use.
Best for Efficiency
Bitmain Antminer S21 official reference17.5 J/TH — lower electricity cost per unit of hashrate.
Frequently Asked Questions
When should I replace my S19 Pro with an S21?
When the S21's efficiency advantage generates enough extra profit to cover its purchase price within your acceptable ROI timeline. At rates above $0.08/kWh, the switch makes financial sense relatively quickly.
Can I use my S19 Pro power supply with an S21?
It depends on the specific PSU model and wattage rating. Both use similar power connections, but always verify the PSU output matches the S21's requirements. APW12 units typically work with both.
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