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Bitmain Antminer S21 (151 TH/s)
In stock · $1,923 all-in, delivered, installed and hosted in Argentina · Bitmain · Air-cooled · SHA-256
The Bitmain Antminer S21 (151 TH/s) is a air-cooled SHA-256 bitcoin ASIC miner from Bitmain released in Aug 2023. It runs at 151 TH/s while drawing 2,643 W, an efficiency of 17.5 J/TH. It is in stock, delivered and hosted at one of our sites.
More on this machine: Bitmain Antminer S21 price history · Bitmain Antminer S21 profitability history · Antminer S21 review: 17.5 J/TH on air at a low box price, and Nigeria is where it pays best · What two and a half years on an Antminer S21 actually produced
Bitmain Antminer S21 profitability
As of Nov 1, 2026, hosted in Argentina at 6.5¢/kWh with 98.7% uptime. Bitcoin $77,951.
| Period | Bitcoin mined | Revenue | Electricity | Profit |
|---|---|---|---|---|
| Daily | 0.000064 BTC | $4.97 | $4.27 | $0.69 |
| Weekly | 0.000446 BTC | $34.76 | $29.91 | $4.85 |
| Monthly | 0.001938 BTC | $151.04 | $129.98 | $21.06 |
| Yearly | 0.023250 BTC | $1,812.33 | $1,559.63 | $252.71 |
Electricity per bitcoin mined: $67,082. Year 1 return: 13%.
Bitmain Antminer S21 price history
From $2,938 in Dec 2023 to $888 in Sep 2026 (-70%).
| Month | Price per unit | Price per TH |
|---|---|---|
| Dec 2023 | $2,938 | $19.46 |
| Jan 2024 | $3,025 | $20.03 |
| Feb 2024 | $3,029 | $20.06 |
| Mar 2024 | $3,044 | $20.16 |
| Apr 2024 | $2,957 | $19.58 |
| May 2024 | $2,884 | $19.10 |
| Jun 2024 | $2,772 | $18.36 |
| Jul 2024 | $2,689 | $17.81 |
| Aug 2024 | $2,659 | $17.61 |
| Sep 2024 | $2,756 | $18.25 |
| Oct 2024 | $2,679 | $17.74 |
| Nov 2024 | $2,701 | $17.89 |
| Dec 2024 | $2,597 | $17.20 |
| Jan 2025 | $2,451 | $16.23 |
| Feb 2025 | $2,499 | $16.55 |
| Mar 2025 | $2,611 | $17.29 |
| Feb 2026 | $920 | $6.09 |
| Mar 2026 | $932 | $6.17 |
| Apr 2026 | $793 | $5.25 |
| May 2026 | $916 | $6.06 |
| Jun 2026 | $916 | $6.06 |
| Jul 2026 | $888 | $5.88 |
| Aug 2026 | $872 | $5.78 |
| Sep 2026 | $888 | $5.88 |
Where to host the Bitmain Antminer S21
| Site | Cooling | Rate | Uptime | Cost per BTC | Profit per month | All-in per unit | Year 1 return |
|---|---|---|---|---|---|---|---|
| UAE | Immersion | 6.5¢ | 99.3% | $67,082 | $21 | $2,446 | 10% |
| Nigeria | Air-cooled | 4.5¢ | 73.6% | $46,441 | $46 | $1,967 | 28% |
| Argentina | Air-cooled | 6.5¢ | 98.7% | $67,082 | $21 | $1,923 | 13% |
Bitmain Antminer S21 specifications
| Specification | Value |
|---|---|
| Manufacturer | Bitmain |
| Model | Bitmain Antminer S21 |
| Release date | Aug 2023 |
| Algorithm | SHA-256 |
| Hashrate | 151 TH/s |
| Power consumption | 2643 W |
| Efficiency | 17.5 J/TH |
| Cooling | Air-cooled |
| Dimensions | 400 x 195 x 290 mm (approx.) |
| Weight | 16 kg (approx.) |
Bitmain Antminer S21 FAQ
How much does the Bitmain Antminer S21 cost?
The all-in price of the Bitmain Antminer S21 (151 TH/s) is about $1,923 per machine, delivered, imported, installed and hosted in Argentina with a two-month hosting deposit. That is the machine itself at $888 ($5.88 per TH/s, the Hong Kong price) plus shipping, infrastructure, import duty, customs, setup and the deposit.
Is the Bitmain Antminer S21 (151 TH/s) profitable?
As of Nov 1, 2026, hosted in Argentina at 6.5¢/kWh, the Bitmain Antminer S21 (151 TH/s) is calculated to generate $0.69 daily, $21.06 monthly and $252.71 yearly after electricity, at a bitcoin price of $77,951. It always changes with bitcoin's price and network difficulty.
What does it cost to mine one bitcoin with the Bitmain Antminer S21?
Electricity to mine one bitcoin with the Bitmain Antminer S21 costs about $67,082 in Argentina, and $67,082 in UAE and $46,441 in Nigeria. Bitcoin trades at $77,951, so every coin it mines is made 14% below the price of buying one.
What is the year 1 return of the Bitmain Antminer S21?
At current bitcoin price and difficulty, the Bitmain Antminer S21 returns 10–28% 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?
The Bitmain Antminer S21 produces 151 TH/s of SHA-256 hashrate and consumes 2,643 W, giving an efficiency of 17.5 J/TH.
What are the dimensions and weight of the Bitmain Antminer S21?
The Bitmain Antminer S21 measures about 400 x 195 x 290 mm and weighs around 16 kg.
Is the Bitmain Antminer S21 air-cooled or hydro-cooled?
The Bitmain Antminer S21 is air-cooled with fans. In the UAE we run air-cooled machines in immersion tanks instead, which keeps them cool in desert heat.
Where can the Bitmain Antminer S21 be hosted?
We can host the Bitmain Antminer S21 in UAE (6.5¢/kWh, 99.3% uptime, immersion), Nigeria (4.5¢/kWh, 73.6% uptime) and Argentina (6.5¢/kWh, 98.7% uptime). The bitcoin it mines goes straight to your own wallet.
How has the price of the Bitmain Antminer S21 changed?
The Bitmain Antminer S21 sold for $2,938 in Dec 2023 and $888 as of Sep 2026, down 70%. Over that time it ranged from $793 to $3,062.
When was the Bitmain Antminer S21 released?
Bitmain announced the Bitmain Antminer S21 in Aug 2023.