Antminer S21 Pro
Bitmain · SHA-256
Antminer S21 Pro
- Prefer not to pay everything at once? A 50% deposit is enough; the price is then 2% higher: deposit 35 342 Kč incl. VAT, and you pay the rest once the miner is on its way.
- The date reflects the factory production date plus a few days for shipping and customs.
- We set up the miner free of charge to mine into your wallet.
How the pre-order works
- You order online and receive an invoice – for the full amount or for a 50% deposit (price +2%).
- Once we receive payment, we order from the manufacturer.
- As soon as the miner has a tracking number, we let you know. With a deposit, you pay the rest at that point.
- You collect the miner in Prague, we ship it to you, or we connect it straight away on our hosting.
On our hosting
- Electricity for this machine
- –
- Profit after electricity
- –
One-off
- Installation and services
- –
- Shipping to the data centre
- –
- Customs and fees by location
- –
- 7-year warranty on hosting
- Option to split the payment into 4 instalments
Excluding optional services; you will see the final price in the hosting order.
Order on hosting ↗ (opens in a new tab)Choose a location, sign up and pay by crypto, bank transfer or in instalments.
What it can mine
- Bitcoin≈ 192 Kč/day
- Bitcoin Cash≈ 195 Kč/day
- Bitcoin SV≈ 206 Kč/day
- eCash≈ 206 Kč/day
- Fractal Bitcoin≈ 204 Kč/day
- DigiByte≈ 138 Kč/day
- Quai≈ 234 Kč/daymost profitable today
Gross revenue before electricity, based on today’s difficulty and exchange rate. Coins without an amount are not calculated yet.
Suitable for
- Hosting
- Workshop, plant room
- Flat – 75 dB, loud
Current hosting prices · 22/10/2026Let it mine with us
The miner goes from the supplier straight to the data centre. We connect it and look after it; you just follow the earnings.
- from 1.14 Kč/kWhelectricity incl. management · with prepayment up to −30%
- 7-year warrantywhile the miner runs with us (at home 2 years)
- 7 data centresto choose from, uptime up to 99.85%
- 0 dB at home75 dB of noise stays in the data centre
Technical specifications
- Manufacturer
- Bitmain
- Algorithm
- SHA-256
- Coins
- Bitcoin, Bitcoin Cash, Bitcoin SV, DigiByte, eCash, Fractal Bitcoin, Quai
- Hashrate
- 245 TH/s
- Power draw
- 3675 W
- Efficiency
- 15.0 J/TH
- Cooling
- Air
- Noise level
- 75 dB
- Power supply
- 220–277 V
- Condition
- New
- Warranty
- 24 months · 84 months when hosted with us
How much it earns
Enter your tariff. The default value is an example.
Revenue based on the current network difficulty and exchange rate, updated 25/10/2026 20:59. We use today’s revenue. In reality it changes with network difficulty, the exchange rate and halvings, so treat multi-year figures as indicative. Pool fees are not included.
- Personal collectionPrague 10
- ASIC miner repairsright here in Prague
- Pay by bank transfer or in cryptoBank transfer (CZK / €), USDT/USDC or cash at the shop
- VAT invoicereverse charge for EU businesses
Description
Weight: 18.5 kg
Antminer S21 Pro is an air-cooled ASIC miner from Bitmain for SHA-256 (Bitcoin, Bitcoin Cash, Bitcoin SV, eCash). Available in 245 TH/s / 234 TH/s versions (power draw 3,675 W / 3,510 W), efficiency around 15 J/TH.
Because of its noise and power draw it is best suited to a plant room, workshop or data centre – with us you can run it straight away in our hosting.
Specifications
- Algorithm: SHA-256 (Bitcoin, Bitcoin Cash, Bitcoin SV, eCash)
- Hashrate: 245 TH/s / 234 TH/s
- Power draw: 3,675 W / 3,510 W
- Efficiency: 15 J/TH
- Cooling: air
- Power supply: 220–277 V
- Noise: approx. 75 dB
- Condition: new, manufacturer's warranty
Made to order – price based on current market offers; we confirm the delivery date after you order. Specifications are based on manufacturer data; actual power draw may vary slightly by version and settings. You can estimate the indicative return at your electricity price with the calculator on this page.
Setup guide
We will set it up for you free of charge. Send us your wallet address and the miner will mine for you alone. If you do not have a wallet yet, we will help you create one.
Setting up an Antminer (Bitmain) minerDefault login: root / root
