Bitmain
Antminer S21+ Hydro 395T
AvailableNew
- Hashrate
- 395TH/s
- Power
- 4,785W
- Efficiency
- 12.1J/TH
- Hydro-cooled
- SHA-256
$2,374.05$6.01/TH
Picture of the model. The unit you receive may differ in appearance.
Bitdeer SealMiner A3 Pro 660 TH/s Bitcoin Miner
The SealMiner A3 Pro 660T is a hydro-cooled Bitcoin miner from Bitdeer, rated at 660 TH/s and 8,250 W (12.5 J/TH).
- Hashrate
- 660TH/s
- Power
- 8,250W
- Efficiency
- 12.5J/TH
- Cooling
- Hydro-cooled
- Coins
- BTC
Retail price
$9,024.05
per unit · $13.67 per TH/s
- 1–4 units$9,024.05
- 5+ unitsVolume pricing available
View volume pricingVolume pricing
| 1–4 units | $9,024.05 |
|---|---|
| 5–19 units | Volume pricing on request |
| 20–99 units | Request Quote |
| 100+ units | Contact Mining Sales |
- Ships in
- 5–10 business days
$9,024.05Free standard shipping. Excludes duties and taxes
- Manufacturer
- Bitdeer
- Model
- SealMiner A3 Pro 660T
- Algorithm
- SHA-256
- Condition
- New
Product overview
The SealMiner A3 Pro 660T is a hydro-cooled Bitcoin miner from Bitdeer, rated at 660 TH/s and 8,250 W (12.5 J/TH).
Condition: New.
660 TH/s
Rated hashrate
12.5 J/TH
Energy per terahash
Hydro-cooled
Cooling method
8,250 W
Power draw at the wall
Technical specifications
Fields that are not stated are left out rather than estimated.
Performance
| Hashrate | 660 TH/s (±10%) |
|---|---|
| Power consumption | 8,250 W (±10%) |
| Efficiency | 12.5 J/TH |
| Algorithm | SHA-256 |
| Supported coins | BTC |
Cooling
| Cooling type | Hydro-cooled |
|---|
Mining economics
Estimate output and operating cost for the SealMiner A3 Pro 660T at your own power price. Results are calculations from the inputs shown, not a forecast.
Estimated results (per miner, at $0.06/kWh)
- Est. revenue / day
- $23.43
- 0.00029055 BTC mined / day
- Electricity cost / day
- $11.88
- 198 kWh × $0.06
- Operating result / day
- $11.55
- Revenue less electricity
- Revenue / 30 days
- $702.89
- Electricity / 30 days
- $356.40
- Operating result / 30 days
- $346.49
- Energy / day
- 198 kWh
- Energy / 30 days
- 5,940 kWh
- Break-even electricity
- $0.118/kWh
Estimates only. Not financial advice. Results vary with network difficulty, pool fees, uptime, market conditions, the Bitcoin price and the cost of electricity. They are calculated from the inputs shown at constant difficulty and price, and leave out the cost of the hardware, cooling, downtime, taxes and depreciation.
Network data as of 2026-10-28 13:00 UTC · price: mempool.space · difficulty: mempool.space · block reward 3.1391 BTC
Electricity cost by power price
Daily and 30-day electricity cost of SealMiner A3 Pro 660T at 8,250 W, with the estimated revenue beside it.
| Electricity price | Electricity / day | Electricity / 30 days | Est. revenue / day | Est. net / day |
|---|---|---|---|---|
| $0.03/kWh | $5.94 | $178.20 | $23.43 | $17.49 |
| $0.05/kWh | $9.90 | $297.00 | $23.43 | $13.53 |
| $0.06/kWhselected | $11.88 | $356.40 | $23.43 | $11.55 |
| $0.07/kWh | $13.86 | $415.80 | $23.43 | $9.57 |
| $0.10/kWh | $19.80 | $594.00 | $23.43 | $3.63 |
| $0.12/kWh | $23.76 | $712.80 | $23.43 | -$0.33 |
| $0.15/kWh | $29.70 | $891.00 | $23.43 | -$6.27 |
| $0.20/kWh | $39.60 | $1,188.00 | $23.43 | -$16.17 |
Compare miners
How the SealMiner A3 Pro 660T compares with the closest alternatives by cooling type and efficiency.
| Model | Hashrate | Power | Efficiency | Cooling | Price | $/TH | Side by side |
|---|---|---|---|---|---|---|---|
| SealMiner A3 Pro 660T (this miner) | 660 TH/s | 8,250 W | 12.5 J/TH | Hydro-cooled | $9,024.05 | $13.67 | |
| Antminer S21+ Hydro 395T | 395 TH/s | 4,785 W | 12.1 J/TH | Hydro-cooled | $2,374.05 | $6.01 | Side by side |
| Antminer S21 XP Hyd. | 473 TH/s | 5,676 W | 12 J/TH | Hydro-cooled | $5,889.05 | $12.45 | Side by side |
| Antminer S21e XP Hyd. | 430 TH/s | 5,590 W | 13 J/TH | Hydro-cooled | $3,324.05 | $7.73 | Side by side |
| Antminer S21j XP Hyd. | 495 TH/s | 5,940 W | 12 J/TH | Hydro-cooled | $4,988.09 | $10.08 | Side by side |
Shipping
Standard shipping is free to every destination we ship to. If you need it faster, choose express shipping at checkout and we quote it before you pay. Import duties, taxes and customs clearance are set by the destination country and are the importer's responsibility unless your quotation states otherwise.
SealMiner A3 Pro 660T questions
How much electricity does the SealMiner A3 Pro 660T use?
The SealMiner A3 Pro 660T draws 8,250 W at the wall (±10%). Running continuously that is about 198 kWh per day and 5,940 kWh per 30 days. Multiply by your electricity price to get the running cost, or use the calculator.
What is the hashrate and efficiency of the SealMiner A3 Pro 660T?
Rated hashrate is 660 TH/s (±10%) at 12.5 J/TH. Lower J/TH means less energy per unit of hashrate. See Understanding J/TH.
How is the SealMiner A3 Pro 660T cooled?
The SealMiner A3 Pro 660T is hydro-cooled: heat is removed by liquid circulating through cold plates, so it needs an external cooling loop (pump, heat exchanger or dry cooler) and cannot run on fans alone. Compare options in Air vs hydro Bitcoin miners.
Can I order the SealMiner A3 Pro 660T in bulk?
Yes. Orders are handled by quantity: small quantities through checkout when a price is published, and larger quantities by quotation with pricing, batch and logistics confirmed by sales. Request a wholesale quote.
Similar miners
The closest alternatives by cooling type and efficiency.
Bitmain
Antminer S21 XP Hyd.
AvailableNew- Hashrate
- 473TH/s
- Power
- 5,676W
- Efficiency
- 12J/TH
- Hydro-cooled
- SHA-256
$5,889.05$12.45/TH
Bitmain
Antminer S21e XP Hyd.
AvailableNew- Hashrate
- 430TH/s
- Power
- 5,590W
- Efficiency
- 13J/TH
- Hydro-cooled
- SHA-256
$3,324.05$7.73/TH
Bitmain
Antminer S21j XP Hyd.
AvailableNew- Hashrate
- 495TH/s
- Power
- 5,940W
- Efficiency
- 12J/TH
- Hydro-cooled
- SHA-256
$4,988.09$10.08/TH
Related
Wholesale & project supply
Need the SealMiner A3 Pro 660T in volume?
Send quantity, destination and required date. Sales replies with batch availability, unit pricing and freight options for your order size.
- 20+ units
- Mixed models
- Container orders
- Project procurement
SealMiner A3 Pro 660T
$9,024.05