Antminer S21 XP 270 TH/s
Bitmain · SHA-256
Antminer S21 XP 270 TH/s
- Prefer not to pay everything at once? A 50% deposit is enough; the price is then 2% higher: deposit 42 329 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≈ 212 Kč/day
- Bitcoin Cash≈ 205 Kč/day
- Bitcoin SV≈ 201 Kč/day
- eCash≈ 224 Kč/daymost profitable today
- Fractal Bitcoin≈ 206 Kč/day
- DigiByte≈ 146 Kč/day
- Quai≈ 212 Kč/day
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
- 270 TH/s
- Power draw
- 3645 W
- Efficiency
- 13.5 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 24/10/2026 21:59. 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
The Antminer S21 XP is an air-cooled SHA-256 miner from Bitmain for mining Bitcoin. At a hashrate of 270 TH/s it draws 3,645 W, i.e. 13.5 J/TH – one of the most efficient air-cooled machines on the market.
Key features
- 270 TH/s on SHA-256 – mines Bitcoin (BTC), or alternatively Bitcoin Cash.
- 13.5 J/TH – miners are compared by efficiency: it determines how much of the earnings goes on electricity.
- Air cooling – no water loop, just air intake and exhaust.
- Power supply 220–277 V – single-phase, but on its own protected circuit.
Who it is for
For miners who want the lowest possible consumption per terahash without water cooling. With a noise level of around 75 dB, it is a machine for a utility room, garage or data centre – it is not suitable for living spaces.
Operation and installation
Expect a continuous load of 3.6 kW, which means a dedicated circuit and a properly sized cable. The miner needs a supply of cool air and an outlet for warm air – ideally outdoors or into the ventilation system. It connects by cable via Ethernet and is configured in the web interface.
Frequently asked questions
What are the Antminer S21 XP specifications?
Can it be run at home?
Can I run the machine on your hosting?
How much will the machine earn?
What warranty does it have?
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
