Mining set: Antminer S21+ Hyd 395 TH/s + 12 kW water cooling
PC Praha · SHA-256
Mining set: Antminer S21+ Hyd 395 TH/s + 12 kW water cooling
- Prefer not to pay everything at once? A 50% deposit is enough; the price is then 2% higher: deposit 47 378 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.
What it can mine
- Bitcoin≈ 310 Kč/day
- Bitcoin Cash≈ 303 Kč/day
- Bitcoin SV≈ 299 Kč/day
- eCash≈ 329 Kč/daymost profitable today
- Fractal Bitcoin≈ 301 Kč/day
- DigiByte≈ 219 Kč/day
- Quai≈ 312 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 – with a water loop
- Flat – needs a cooling loop
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 data centresto choose from, uptime up to 99.85%
- 0 dB at home50 dB of noise stays in the data centre
Technical specifications
- Manufacturer
- PC Praha
- Algorithm
- SHA-256
- Coins
- Bitcoin, Bitcoin Cash, Bitcoin SV, DigiByte, eCash, Fractal Bitcoin, Quai
- Hashrate
- 395 TH/s
- Power draw
- 5925 W
- Efficiency
- 15.0 J/TH
- Cooling
- Hydro
- Noise level
- 50 dB
- Power supply
- 380–415 V, 3-phase
- Condition
- New
- Warranty
- 24 months
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 22:59. 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: 49.5 kg
Antminer S21+ Hyd hydro miner (395 TH/s, power draw 5,925 W) with 12 kW water cooling. Heat from the miner goes into the coolant and the radiator releases it into the air – or you can use it to heat your house or hot water. The cooling runs at around 38 dB, so the set does not need a data centre.
What's in the set
Why they belong together
- The 12 kW cooling capacity is more than twice the miner's power draw (5.9 kW) – headroom for summer temperatures and for running at higher power.
- The cooling kit is designed for 1 water-cooled Antminer, so it is exactly one machine per circuit.
- The heat in the water can be fed into a heating system – instead of producing waste heat, the miner then helps heat your home.
Why not the smaller OCOCOO BC5 cooler? It dissipates 4–5 kW, which is not enough for a hydro miner drawing over 5 kW.
What we do for you
- We connect the miner to the cooling, fill the circuit and bleed it.
- We test the set in operation – coolant temperature, flow rate and hashrate.
- We configure the pool of your choice (you provide the wallet address).
- We hand the set over in person in Prague 10, or ship it to you.
What you need at home
The miner runs on a three-phase supply (380–415 V); allow for a continuous load of 5.9 kW. Connection to a heating system or hot-water tank is a job for a heating engineer – we will gladly pass on the circuit parameters.
Warranty
The miner and all other components carry the same warranty as when bought separately – 24 months. Claims and servicing are handled directly in Prague at our ASIC miner service centre.
Set price
The set price is the sum of the current component prices less 2% (rounded up to …99 Kč). Compared with buying separately, you save 1 799 Kč. If the price of any component changes, we recalculate the set price.