Antminer S21 Immersion (239TH/s) vs A9++ ZMaster (140KH/s)
Compare pricing, hashrate, power draw, efficiency, ROI, and estimated hosted profitability before choosing your next mining setup.
Option 1
Antminer S21 Immersion (239TH/s)
Option 2
A9++ ZMaster (140KH/s)
A9++ ZMaster (140KH/s) leads this comparison
A9++ ZMaster (140KH/s) comes out ahead on more buyer-facing signals here. Antminer S21 Immersion (239TH/s) can still be the better fit when budget, availability, or a specific mining setup matters more.
Profit estimates use currently available product data and a hosted electricity rate of $0.060/kWh.
Technical comparison
Side-by-side mining, operating, and commercial specs.
| Feature | Antminer S21 Immersion (239TH/s) | A9++ ZMaster (140KH/s) | Advantage |
|---|---|---|---|
| Brand | N/A | Innosilicon | Contextual |
| Model | N/A | A9++ | Contextual |
| Hashrate | 239 TH/s Best | 140 KH/s | Antminer S21 Immersion (239TH/s) |
| Power Consumption | 5569W | 1550W Best | A9++ ZMaster (140KH/s) |
| Efficiency | 23.30 J/TH | 11.07 J/KH Best | A9++ ZMaster (140KH/s) |
| Daily energy use | 133.7 kWh | 37.2 kWh Best | A9++ ZMaster (140KH/s) |
| Net Daily Profit (Est.) | -$1.30 | $1.96 Best | A9++ ZMaster (140KH/s) |
| Monthly Profit (Est.) | -$38.98 | $58.74 Best | A9++ ZMaster (140KH/s) |
| Price | $1,434.07 | N/A | Contextual |
| Estimated ROI | N/A | N/A | Contextual |
| Cooling | IMMERSION | AIR | Contextual |
| Dimensions | 293 x 364 x 236 mm | 155 x 360 x 250 mm | Contextual |
| Weight | 17150 g | 11000 g Best | A9++ ZMaster (140KH/s) |
Performance
Antminer S21 Immersion (239TH/s) has the hashrate edge for raw output potential.
Efficiency
A9++ ZMaster (140KH/s) is stronger when comparing joules per hash unit.
Buying decision
Check live stock, delivery schedule, and hosting capacity on the product page before placing an order.
Frequently asked questions
Which is more powerful: Antminer S21 Immersion (239TH/s) or A9++ ZMaster (140KH/s)?
Antminer S21 Immersion (239TH/s) has a higher hashrate of 239 TH/s compared to A9++ ZMaster (140KH/s)'s 140 KH/s.
Is Antminer S21 Immersion (239TH/s) more efficient than A9++ ZMaster (140KH/s)?
A9++ ZMaster (140KH/s) is more energy efficient at 11.07 J/KH.
Which miner has the better estimated ROI?
Estimated ROI is not available because one of the miners is missing current pricing or profit data.
Every Day You Wait is Revenue You Lose
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