Antminer S19j Pro vs Antminer S19k Pro
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S19j Pro | Specification | Antminer S19k Pro |
|---|---|---|
| 100.0 TH/s | Hashrate | 120.0 TH/s |
| 3,050 W | Power Consumption | 2,760 W |
| 30.5 J/TH | Efficiency | 23.0 J/TH |
| 75 dB | Noise Level | 75 dB |
| 13.2 kg | Weight | 12.5 kg |
| 10,407 BTU/hr | BTU Output | 9,417 BTU/hr |
| 84/100 | Home Mining Score | 84/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer S19j Pro
Antminer S19k Pro
Based on BTC price of $74,859 and current network difficulty as of Mar 17, 2026. Actual results vary.
Verdict
The S19k Pro was Bitmain's last hurrah for the S19 platform, squeezing the most efficiency possible from the architecture before the S21 series launched.
The S19k Pro edges ahead with slightly better efficiency, making it the best of the S19 lineup. However, both are now one generation behind and face similar profitability challenges at higher electricity rates.
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
TieBoth miners are equally suitable for home use.
Best for Efficiency
Antminer S19k Pro23.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the S19k Pro the best S19-series miner?
Yes, the S19k Pro achieves the best efficiency of any S19-family model. It represents the most refined version of the platform.
Should I buy an S19k Pro or jump to the S21?
The S21 is significantly more efficient and represents the current generation. An S19k Pro only makes sense if found at a steep discount or if you need parts-compatible hardware for an existing S19 fleet.