Bitmain Antminer S21 Pro 234 TH
€2.960,00
€3.290,00
Estimated earnings
How we calculate
Formulas
BTC/day = (Hashrate / Network Hashrate) × 144 blocks × 3.125 BTC
Your miner's share of the total network, multiplied by the daily block rewards. 144 blocks are mined per day, each worth 3.125 BTC.
Revenue = BTC/day × BTC price
The BTC price is fetched live from the blockchain.info API and converted to your local currency.
Pays for itself = Product price / Monthly revenue
How many months of mining revenue it takes to cover the purchase price.
Scenarios
Conservative
BTC price −30%, difficulty −5%. (Shows scenario if conditions worsen)
Current (Live)
Today's actual BTC price and mining difficulty.
Optimistic
BTC price +100%, difficulty +20%. (Shows scenario if Bitcoin grows)
Important notes
- Electricity costs are not deducted. Actual profit depends on your local electricity rate.
- Mining difficulty changes roughly every 2 weeks. Higher difficulty means lower earnings.
- Pool fees (typically 1-2%) are not deducted. Most miners use a mining pool.
- The block reward halves approximately every 4 years. The next halving will reduce it from 3.125 to 1.5625 BTC.
- These calculations are estimates based on current network conditions. Actual earnings may vary. This is not financial advice.
Free shipping
30-day-return
5.000+ Satisfied customers
Product information
Hashrate: 234 TH/s
Power: 3,510 W
Efficiency: Up to 15 J/TH
Algorithm: SHA-256
Condition: New
Bitmain Antminer S21 Pro 234 TH
What customers say
5,000+ satisfied customers and trusted by thousands of homes across Europe.
Verified
The app (iOS) is well made and feels intuitive, the heater itself is very quiet even when running at its maximum power. I have using it for 5 days now and so far I'm very happy. I almost never write reviews but this company deserves to get recognition
Daniel Garcia
January 14, 2026
Verified
Excellent service as always! Thank you again 😊
JonnyW
February 5, 2026
Verified
Had an error at first but to be fair they did everything to rectify it and put it right and more
andrew ferguson
April 2, 2026
Verified
Perfect ! I receive everything and travel was long. Thx to all team !
Vivien Gaillard
January 8, 2026
Verified
Top Support 👍
Alex Tornyossy
March 23, 2026
Verified
all good, works well, good support.
Fredrik Åhslund
December 22, 2025
Verified
Ofen 2 is good product and there is a good service support. The product is well designed and well manufactured. I got a minor bug issue at the beginning with the thermostat. Support solved it very quickly with an update.
Jidé Jidé
December 4, 2025
Verified
Awesome Team. Had a great conversation with a customer service agent, helped me understand the inner workings of mining!
Remington Splettstoesser
September 24, 2025
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