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Rectangular silver ASIC miner with dual fans on front grille

AFRNDK

AFRNDK Antminer S21+ 235TH/s 3564W mining hardware

SKU CH-70GJ-B5427

SHA-256 ASIC Bitcoin miner delivering 235 TH/s at 3564 W with 75 dB noise in a 400 × 195 × 290 mm chassis

  • Hash rate235TH/S
  • Hash algorithmSHA256
  • Supported coinsBitcoin (BTC)
  • Miner hardwareASIC
  • Operating noise85 dB
  • Power draw3564 W
  • 235 TH/s hashrate maximises Bitcoin mining output
  • 3564 W power draw optimises energy efficiency
  • 75 dB noise level suits managed facilities
  • 400 × 195 × 290 mm footprint fits dense racks
  • Operates reliably from 10 °C to 40 °C

AFRNDK Antminer S21+ Bitcoin ASIC

This ASIC miner is built for Bitcoin using the SHA-256 algorithm and delivers a hashrate of 235 TH/s. It draws 3564 W of power and is intended for operators who want maximum throughput from a single unit. The machine ships new and ready for deployment.

Ethernet interface and 220 V power requirement

The miner connects to the network through a single Ethernet port and requires a 220 V supply; incorrect voltage can damage the hardware. It operates between 10 °C and 40 °C with humidity from 10 % to 90 %. Two onboard fans produce a noise level of 75 dB to 85 dB.

235 TH/s hashrate at 3564 W

The hashrate of 235 TH/s and the power draw of 3564 W together determine the energy efficiency that decides whether this model fits a given electricity cost. No other specification outweighs this ratio for profitability calculations.

How it compares

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

Price $2,317.99
Pricier than about 90% 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 lineS21
Model nameS21PLUS
Product typeMining Machine/Miner
Performance
Hash rate235TH/S
Hash algorithmSHA256
Processor
Miner hardwareASIC
Power
Power draw3564 W
Compatibility
Supported coinsBitcoin (BTC)
Environment & compliance
Operating noise85 dB

Questions about this item

What power supply and voltage does this miner need?

The unit requires a 220 V supply and draws 3564 W at the wall. Plan a dedicated circuit and a PSU rated for continuous load at that wattage.

Will the noise level suit a home or office environment?

The manufacturer rates the sound at 75 dB; the supplier also lists 85 dB. Both are comparable to a loud vacuum cleaner, so a separate, ventilated room is recommended.

What are the physical dimensions and operating temperature range?

The chassis measures 400 × 195 × 290 mm and is rated for 10–40 °C ambient temperature with 10–90 % relative humidity.

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