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Bitmain Antminer S21 Hyd (335 TH/s)
Sold out · last price $2,463 per unit · Bitmain · Hydro-cooled · SHA-256
The Bitmain Antminer S21 Hyd (335 TH/s) is a hydro-cooled SHA-256 bitcoin ASIC miner from Bitmain released in Sep 2023. It runs at 335 TH/s while drawing 5,360 W, an efficiency of 16 J/TH. It is currently sold out; the figures below show what it would earn if hosted with us today.
More on this machine: Bitmain Antminer S21 Hyd price history · Bitmain Antminer S21 Hyd profitability history
Bitmain Antminer S21 Hyd profitability
As of Sep 21, 2026, hosted in Argentina at 6.0¢/kWh with 98.7% uptime. Bitcoin $87,031.
| Period | Bitcoin mined | Revenue | Electricity | Profit |
|---|---|---|---|---|
| Daily | 0.000158 BTC | $13.78 | $8.30 | $5.49 |
| Weekly | 0.001109 BTC | $96.48 | $58.08 | $38.40 |
| Monthly | 0.004817 BTC | $419.27 | $252.41 | $166.86 |
| Yearly | 0.057804 BTC | $5,030.70 | $3,028.56 | $2,002.13 |
Electricity per bitcoin mined: $52,394. Year 1 return: 39%.
Bitmain Antminer S21 Hyd price history
From $6,627 in Mar 2024 to $2,095 in Jun 2026 (-68%).
| Month | Price per unit | Price per TH |
|---|---|---|
| Mar 2024 | $6,421 | $19.17 |
| Apr 2024 | $5,975 | $17.84 |
| May 2024 | $5,940 | $17.73 |
| Jun 2024 | $6,249 | $18.66 |
| Jul 2024 | $5,906 | $17.63 |
| Sep 2024 | $5,631 | $16.81 |
| Oct 2024 | $5,494 | $16.40 |
| Nov 2024 | $6,112 | $18.25 |
| Dec 2024 | $6,078 | $18.14 |
| Jan 2025 | $5,872 | $17.53 |
| Feb 2025 | $5,872 | $17.53 |
| May 2026 | $2,095 | $6.25 |
| Jun 2026 | $2,095 | $6.25 |
Where to host the Bitmain Antminer S21 Hyd
| Site | Cooling | Rate | Uptime | Cost per BTC | Profit per month | All-in per unit | Year 1 return |
|---|---|---|---|---|---|---|---|
| UAE | Hydro-cooled | 6.0¢ | 99.3% | $52,394 | $168 | $4,521 | 45% |
| Nigeria | Hydro-cooled | 3.9¢ | 73.6% | $34,056 | $190 | $5,082 | 45% |
| Argentina | Hydro-cooled | 6.0¢ | 98.7% | $52,394 | $167 | $5,136 | 39% |
Bitmain Antminer S21 Hyd specifications
| Specification | Value |
|---|---|
| Manufacturer | Bitmain |
| Model | Bitmain Antminer S21 Hyd |
| Release date | Sep 2023 |
| Algorithm | SHA-256 |
| Hashrate | 335 TH/s |
| Power consumption | 5360 W |
| Efficiency | 16 J/TH |
| Cooling | Hydro-cooled |
| Dimensions | 410 x 170 x 209 mm (approx.) |
| Weight | 12.3 kg (approx.) |
Bitmain Antminer S21 Hyd FAQ
How much does the Bitmain Antminer S21 Hyd cost?
The Bitmain Antminer S21 Hyd (335 TH/s) is sold out with us; its market price is about $2,463 per unit ($7.35 per TH/s). Delivered, imported, installed and hosted in Argentina with a two-month hosting deposit, the all-in cost is about $5,136 per machine.
Is the Bitmain Antminer S21 Hyd (335 TH/s) profitable?
As of Sep 21, 2026, hosted in Argentina at 6.0¢/kWh, the Bitmain Antminer S21 Hyd (335 TH/s) is calculated to generate $5.49 daily, $166.86 monthly and $2,002.13 yearly after electricity, at a bitcoin price of $87,031. It always changes with bitcoin's price and network difficulty.
What does it cost to mine one bitcoin with the Bitmain Antminer S21 Hyd?
Electricity to mine one bitcoin with the Bitmain Antminer S21 Hyd costs about $52,394 in Argentina, and $52,394 in UAE and $34,056 in Nigeria. Bitcoin trades at $87,031, so every coin it mines is made 40% below the price of buying one.
What is the year 1 return of the Bitmain Antminer S21 Hyd?
At current bitcoin price and difficulty, the Bitmain Antminer S21 Hyd returns 39–45% in its first year at our sites, after electricity, against everything paid up front: the machine, shipping, import, infrastructure, setup and hosting deposit. You keep the machine and every bitcoin it mines. It always changes.
What is the hashrate and power consumption of the Bitmain Antminer S21 Hyd?
The Bitmain Antminer S21 Hyd produces 335 TH/s of SHA-256 hashrate and consumes 5,360 W, giving an efficiency of 16 J/TH. Its hydro cooling loop adds about 200 W for water pumps.
What are the dimensions and weight of the Bitmain Antminer S21 Hyd?
The Bitmain Antminer S21 Hyd measures about 410 x 170 x 209 mm and weighs around 12.3 kg.
Is the Bitmain Antminer S21 Hyd air-cooled or hydro-cooled?
The Bitmain Antminer S21 Hyd is hydro-cooled: water carries heat away from the hashboards, so it runs quietly with no fans and needs a cooling loop with a dry cooler.
Where can the Bitmain Antminer S21 Hyd be hosted?
We can host the Bitmain Antminer S21 Hyd in UAE (6.0¢/kWh, 99.3% uptime), Nigeria (3.9¢/kWh, 73.6% uptime) and Argentina (6.0¢/kWh, 98.7% uptime). The bitcoin it mines goes straight to your own wallet.
How has the price of the Bitmain Antminer S21 Hyd changed?
The Bitmain Antminer S21 Hyd sold for $6,627 in Mar 2024 and $2,095 as of Jun 2026, down 68%. Over that time it ranged from $2,095 to $6,627.
When was the Bitmain Antminer S21 Hyd released?
Bitmain announced the Bitmain Antminer S21 Hyd in Sep 2023.
Alternatives to the Bitmain Antminer S21 Hyd
- Canaan Avalon A1566HA 2U (500 TH/s)
- Canaan Avalon A1566HA 2U (460 TH/s)
- Bitmain Antminer S21+ Hyd (395 TH/s)
- Bitmain Antminer S21+ Hyd (358 TH/s)
- Bitmain Antminer S21e Hyd (332 TH/s)
- Bitmain Antminer S21e Hyd (310 TH/s)
Also sold as Bitmain Antminer S21 Hyd (302 TH/s).