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Compare pricing, hashrate, power draw, efficiency, ROI, and estimated hosted profitability before choosing your next mining setup.

Option 1

Option 2
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.
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 | $3.29 Best | A9++ ZMaster (140KH/s) |
| Monthly Profit (Est.) | -$38.98 | $98.64 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) |
Antminer S21 Immersion (239TH/s) has the hashrate edge for raw output potential.
A9++ ZMaster (140KH/s) is stronger when comparing joules per hash unit.
Check live stock, delivery schedule, and hosting capacity on the product page before placing an order.
Antminer S21 Immersion (239TH/s) has a higher hashrate of 239 TH/s compared to A9++ ZMaster (140KH/s)'s 140 KH/s.
A9++ ZMaster (140KH/s) is more energy efficient at 11.07 J/KH.
Estimated ROI is not available because one of the miners is missing current pricing or profit data.