MicroBT
WhatsMiner M73 512T
AvailableNew
- Hashrate
- 512TH/s
- Power
- 7,424W
- Efficiency
- 14.5J/TH
- Hydro-cooled
- SHA-256
$5,309.55$10.37/TH
Picture of the model. The unit you receive may differ in appearance.
Bitmain Antminer U3S21EXPH 860 TH/s Bitcoin Miner
The Antminer U3S21EXPH is a hydro-cooled Bitcoin miner from Bitmain, rated at 860 TH/s and 11,180 W (13 J/TH). It runs on 380–415 V three-phase power.
- Hashrate
- 860TH/s
- Power
- 11,180W
- Efficiency
- 13J/TH
- Cooling
- Hydro-cooled
- Coins
- BTC, BCH, BSV
- Input voltage
- 380–415 V
Retail price
$7,124.05
per unit · $8.28 per TH/s
- 1–4 units$7,124.05
- 5+ unitsVolume pricing available
View volume pricingVolume pricing
| 1–4 units | $7,124.05 |
|---|---|
| 5–19 units | Volume pricing on request |
| 20–99 units | Request Quote |
| 100+ units | Contact Mining Sales |
- Ships in
- 5–10 business days
$7,124.05Free standard shipping. Excludes duties and taxes
- Manufacturer
- Bitmain
- Model
- U3S21EXPH
- Algorithm
- SHA-256
- Condition
- New
Product overview
The Antminer U3S21EXPH is a hydro-cooled Bitcoin miner from Bitmain, rated at 860 TH/s and 11,180 W (13 J/TH). It runs on 380–415 V three-phase power.
Condition: New.
860 TH/s
Rated hashrate
13 J/TH
Energy per terahash
Hydro-cooled
Cooling method
11,180 W
Power draw at the wall
Technical specifications
Specifications as published by the manufacturer · last verified October 1, 2026 · Bitmain documentation
Fields the manufacturer does not publish are left out rather than estimated.
Performance
| Hashrate | 860 TH/s (±3%) |
|---|---|
| Power consumption | 11,180 W (±5%) |
| Efficiency | 13 J/TH |
| Algorithm | SHA-256 |
| Supported coins | BTC, BCH, BSV |
Power & electrical
| Input voltage | 380–415 V AC |
|---|---|
| Electrical phase | Three-phase |
| Input frequency | 50-60 Hz |
| Maximum input current | 24 A |
| Power connection | LP34 |
Cooling
| Cooling type | Hydro-cooled |
|---|---|
| Coolant inlet temperature | 20–50 °C |
| Coolant flow | 16–20 L/min |
| Maximum coolant pressure | 3.5 bar |
| Coolant | Antifreeze/Pure water/Deionized water |
| Coolant pipe connection | OD14mm |
Physical & environment
| Dimensions (L × W × H) | 900 × 483 × 130 mm |
|---|---|
| Net weight | 42.7 kg |
| Packaged dimensions | 1150 × 640 × 260 mm |
| Gross weight | 48.6 kg |
| Storage temperature | -20–70 °C |
| Operating humidity (non-condensing) | 10–90 % RH |
Connectivity
| Network interface | RJ45 Ethernet 10/100M |
|---|
General
| Manufacturer warranty | 365 days from the shipping date |
|---|
Mining economics
Estimate output and operating cost for the Antminer U3S21EXPH 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
- $30.53
- 0.00037859 BTC mined / day
- Electricity cost / day
- $16.10
- 268.3 kWh × $0.06
- Operating result / day
- $14.43
- Revenue less electricity
- Revenue / 30 days
- $915.89
- Electricity / 30 days
- $482.98
- Operating result / 30 days
- $432.91
- Energy / day
- 268.3 kWh
- Energy / 30 days
- 8,050 kWh
- Break-even electricity
- $0.114/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 Antminer U3S21EXPH at 11,180 W, with the estimated revenue beside it.
| Electricity price | Electricity / day | Electricity / 30 days | Est. revenue / day | Est. net / day |
|---|---|---|---|---|
| $0.03/kWh | $8.05 | $241.49 | $30.53 | $22.48 |
| $0.05/kWh | $13.42 | $402.48 | $30.53 | $17.11 |
| $0.06/kWhselected | $16.10 | $482.98 | $30.53 | $14.43 |
| $0.07/kWh | $18.78 | $563.47 | $30.53 | $11.75 |
| $0.10/kWh | $26.83 | $804.96 | $30.53 | $3.70 |
| $0.12/kWh | $32.20 | $965.95 | $30.53 | -$1.67 |
| $0.15/kWh | $40.25 | $1,207.44 | $30.53 | -$9.72 |
| $0.20/kWh | $53.66 | $1,609.92 | $30.53 | -$23.13 |
Compare miners
How the Antminer U3S21EXPH compares with the closest alternatives by cooling type and efficiency.
| Model | Hashrate | Power | Efficiency | Cooling | Price | $/TH | Side by side |
|---|---|---|---|---|---|---|---|
| Antminer U3S21EXPH (this miner) | 860 TH/s | 11,180 W | 13 J/TH | Hydro-cooled | $7,124.05 | $8.28 | |
| WhatsMiner M73 512T | 512 TH/s | 7,424 W | 14.5 J/TH | Hydro-cooled | $5,309.55 | $10.37 | Side by side |
| SEALMINER A4 Pro Hydro | 680 TH/s | 7,412 W | 10.9 J/TH | Hydro-cooled | $8,264.05 | $12.15 | Side by side |
| WhatsMiner M63S++ 464T | 464 TH/s | 7,192 W | 15.5 J/TH | Hydro-cooled | $4,408 | $9.50 | Side by side |
| SEALMINER A2 Hydro | 446 TH/s | 7,359 W | 16.5 J/TH | Hydro-cooled | $5,592.65 | $12.54 | 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.
- Package dimensions
- 1150 × 640 × 260 mm
- Gross weight
- 48.6 kg
Documentation
Links open the manufacturer's own documentation on the manufacturer's website.
Antminer U3S21EXPH questions
How much electricity does the Antminer U3S21EXPH use?
The Antminer U3S21EXPH draws 11,180 W at the wall (±5%). Running continuously that is about 268.3 kWh per day and 8,050 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 Antminer U3S21EXPH?
Rated hashrate is 860 TH/s (±3%) at 13 J/TH. Lower J/TH means less energy per unit of hashrate. See Understanding J/TH.
What voltage does the Antminer U3S21EXPH need?
Input voltage is 380–415 V AC, three-phase at 50-60 Hz. It cannot run on a 110–120 V household circuit. Confirm your supply, breaker and cabling with a qualified electrician before ordering. See Bitcoin miner power requirements.
How is the Antminer U3S21EXPH cooled?
The Antminer U3S21EXPH 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. Rated coolant flow is 16–20 L/min. Compare options in Air vs hydro Bitcoin miners.
Can I order the Antminer U3S21EXPH 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.
Bitdeer
SEALMINER A4 Pro Hydro
AvailableNew- Hashrate
- 680TH/s
- Power
- 7,412W
- Efficiency
- 10.9J/TH
- Hydro-cooled
- SHA-256
$8,264.05$12.15/TH
MicroBT
WhatsMiner M63S++ 464T
AvailableNew- Hashrate
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- Efficiency
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Bitdeer
SEALMINER A2 Hydro
AvailableNew- Hashrate
- 446TH/s
- Power
- 7,359W
- Efficiency
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- Hydro-cooled
- SHA-256
$5,592.65$12.54/TH
Wholesale & project supply
Need the Antminer U3S21EXPH 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
Antminer U3S21EXPH
$7,124.05