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Rectangular silver metal mining unit with front grille and rear exhaust vents

Antminer

Antminer S21++ 235T SHA256 ASIC mining hardware

SKU CH-CSZR-1FNX2 MPN S21

SHA256 ASIC miner delivering 235 Th/s at 16.5 J/TH with 3878 W power draw, air-cooled, RJ45 Ethernet, 220–277 V input, 76 dBA noise, operating range −20 °C to 45 °C

  • Hash rate235 Th/s
  • Part#Antminer S21++ 235T
  • Hash algorithmSHA256
  • Supported coinsBitcoin (BTC)
  • Miner hardwareASIC
  • Network interfaceRJ45 Ethernet 10/100M
  • 235 Th/s typical hashrate for SHA256 mining
  • 5 J/TH power efficiency reduces electricity cost
  • 3878 W typical power draw on wall
  • Air cooling operates from -20 °C to 45 °C
  • RJ45 Ethernet 10/100M provides network connectivity

SHA-256 ASIC miner at 235 Th/s

This Antminer S21++ unit delivers a typical hashrate of 235 Th/s on the SHA-256 algorithm used by Bitcoin, Bitcoin Cash and Bitcoin SV. It draws 3878 W at the wall with a typical efficiency of 16.5 J/Th. The machine ships with an integrated power supply and operates on 220–277 V AC single-phase input.

Suited for hosted or industrial sites with 220–277

The miner requires a 220–277 V AC circuit rated for at least 20 A and produces 76 dBA of noise at 30 °C ambient. Those limits rule out most residential or office environments. Operators without adequate cooling, power infrastructure or noise isolation should consider alternative hardware.

16.5 J/Th efficiency at the wall

Power efficiency of 16.5 J/Th determines the electricity cost per terahash and is the primary metric for profitability calculations. Actual wall power and efficiency may vary by ±5 % and hashrate by ±3 %. The unit operates between –20 °C and 45 °C at altitudes up to 2000 m.

How it compares

Measured against everything we stock in ASIC Hardware & PCIe Risers, at today’s prices. Recalculated every night.

Price $1,820.99
Pricier than about 86% of the 566 comparable items (median $792.99).

New to this? Buying an ASIC miner with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameAntminer
Product lineAntminer S21++
Model nameAntminer S21++ 235T
Product typeMining Machine/Miner
Performance
Hash rate235 Th/s
Hash algorithmSHA256
Processor
Miner hardwareASIC
Connectivity
Network interfaceRJ45 Ethernet 10/100M
Power
Power draw3878 W
Power efficiency16.5 J/TH
Size & build
Measurements450 × 219 × 293 mm
Product weight21.5 kg
Compatibility
Supported coinsBitcoin (BTC)
Environment & compliance
Operating noise76 Noise(3-2)@30?, dBA
Operation temperature-20 to 45 °C
Storage temperature range-20 to 70 °C
Operation humidity10%~90%RH
More details
Part#Antminer S21++ 235T

Questions about this item

Does the Antminer S21++ 235T ship with the power supply and power cord included, or must they be purchased separately?

The miner comes with the power supply and power cord already included in the box.

What does the 16.5 J/TH efficiency rating mean for daily electricity cost?

At 235 Th/s the unit draws about 3878 W, so each terahash consumes 16.5 joules; multiply your local kWh rate by 93 kWh to estimate daily power cost.

How much does the hashrate actually vary once the miner is running in a rack?

The manufacturer states the real-world hashrate fluctuates within ±3 % of the 235 Th/s typical figure, while power draw can vary by ±5 %.

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