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Bitmain Antminer S21+ 235T – air-cooled Bitcoin ASIC miner

Picture of the model. The unit you receive may differ in appearance.

AvailableCondition: NewBitmain

Bitmain Antminer S21+ 235 TH/s Bitcoin Miner

The Antminer S21+ 235T is an air-cooled Bitcoin miner from Bitmain, rated at 235 TH/s and 3,564 W (15.2 J/TH).

Hashrate
235TH/s
Power
3,564W
Efficiency
15.2J/TH
derived: power ÷ hashrate
Cooling
Air-cooled
Coins
BTC

Versions of this model

Retail price

$1,614.05

per unit · $6.87 per TH/s

  • 1–4 units$1,614.05
  • 5+ unitsVolume pricing available
View volume pricing
1–4 units$1,614.05
5–19 unitsVolume pricing on request
20–99 unitsRequest Quote
100+ unitsContact Mining Sales
Ships in
5–10 business days
$1,614.05Free standard shipping. Excludes duties and taxes

Product overview

The Antminer S21+ 235T is an air-cooled Bitcoin miner from Bitmain, rated at 235 TH/s and 3,564 W (15.2 J/TH).

Condition: New.

  • 235 TH/s

    Rated hashrate

  • 15.2 J/TH

    Efficiency (power ÷ hashrate)

  • Air-cooled

    Cooling method

  • 3,564 W

    Power draw at the wall

Technical specifications

Fields that are not stated are left out rather than estimated.

Performance

Hashrate235 TH/s
Power consumption3,564 W
Efficiency15.2 J/TH (derived from power ÷ hashrate)
AlgorithmSHA-256
Supported coinsBTC

Cooling

Cooling typeAir-cooled

As stated by the source

Voltage220-277
Noise76db
Net weight21500g
Dimensions450 X 219 X 293mm
InterfaceEthernet
Operating temperature-20 – 45 °C

Mining economics

Estimate output and operating cost for the Antminer S21+ 235T at your own power price. Results are calculations from the inputs shown, not a forecast.

Electricity price (USD per kWh)
units
%
%
Network difficulty, Bitcoin price and hosting
USD
$/kWh

Added to the electricity price.

Open the full calculator

Estimated results (per miner, at $0.06/kWh)

Est. revenue / day
$8.34
0.00010345 BTC mined / day
Electricity cost / day
$5.13
85.5 kWh × $0.06
Operating result / day
$3.21
Revenue less electricity
Revenue / 30 days
$250.27
Electricity / 30 days
$153.96
Operating result / 30 days
$96.31
Energy / day
85.5 kWh
Energy / 30 days
2,566 kWh
Break-even electricity
$0.098/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 S21+ 235T at 3,564 W, with the estimated revenue beside it.

Electricity priceElectricity / dayElectricity / 30 daysEst. revenue / dayEst. net / day
$0.03/kWh$2.57$76.98$8.34$5.78
$0.05/kWh$4.28$128.30$8.34$4.07
$0.06/kWhselected$5.13$153.96$8.34$3.21
$0.07/kWh$5.99$179.63$8.34$2.35
$0.10/kWh$8.55$256.61$8.34-$0.21
$0.12/kWh$10.26$307.93$8.34-$1.92
$0.15/kWh$12.83$384.91$8.34-$4.49
$0.20/kWh$17.11$513.22$8.34-$8.76

Compare miners

How the Antminer S21+ 235T compares with the closest alternatives by cooling type and efficiency.

Compare all miners
ModelHashratePowerEfficiencyCoolingPrice$/THSide by side
Antminer S21+ 235T (this miner)235 TH/s3,564 W15.2 J/THAir-cooled$1,614.05$6.87
Whatsminer M72S 264T264 TH/s4,000 W15.2 J/THAir-cooled$3,704.05$14.03Side by side
NerdQaxe++ 4.8T4.8 TH/s72 W15 J/THAir-cooled$227.05$47.30Side by side
SEALMINER A2 Pro Air 255T255 TH/s3,799.5 W14.9 J/THAir-cooled$2,944.05$11.55Side by side
T3 110T110 TH/s1,700 W15.5 J/THAir-cooled$1,312.61$11.93Side 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.

Antminer S21+ 235T questions

How much electricity does the Antminer S21+ 235T use?

The Antminer S21+ 235T draws 3,564 W at the wall. Running continuously that is about 85.5 kWh per day and 2,566 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 S21+ 235T?

Rated hashrate is 235 TH/s at 15.2 J/TH (derived from rated power ÷ rated hashrate). Lower J/TH means less energy per unit of hashrate. See Understanding J/TH.

How is the Antminer S21+ 235T cooled?

The Antminer S21+ 235T is air-cooled with built-in fans. It needs a steady supply of cool intake air and a path to exhaust hot air. Compare options in Air vs hydro Bitcoin miners.

Can I order the Antminer S21+ 235T 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.

View all Bitcoin miners

Wholesale & project supply

Need the Antminer S21+ 235T 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 S21+ 235T

$1,614.05

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