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Rectangular metal mining unit, matte grey finish, dual front fans, Ethernet port visible

AFRNDK

AFRNDK Antminer S21+ 225TH/s 3564W Bitcoin mining hardware

SKU CH-7V3Y-R4Z0K

SHA-256 ASIC miner delivers 225 TH/s at 3564 W with 75 dB noise in a 400 x 195 x 290 mm chassis

  • TypeMining Machine/Miner
  • Crypto AlgorithmSHA256
  • Compatible CurrencyBitcoin (BTC)
  • Mining HardwareASIC
  • Hashrate225TH/S
  • Noise level85dB
  • Delivers 225 TH/s hashrate for maximum Bitcoin output
  • Operates at 3564 W power draw for efficient energy use
  • Runs at 75 dB noise level for quieter facility deployment
  • Compact 400 x 195 x 290 mm frame fits dense rack layouts
  • Functions reliably from 10 °C to 40 °C ambient temperature

ASIC Bitcoin miner for SHA-256

The AFRNDK Antminer S21+ is an application-specific integrated circuit built to mine Bitcoin using the SHA-256 algorithm. It delivers a hashrate of 225TH/s while drawing 3564W of power. The unit is intended for operators who run dedicated mining infrastructure and can supply 220V input power. It is not suited for buyers who need a general-purpose computer or a quiet home device.

Ethernet interface and dual-fan cooling

The miner connects to the network through a single Ethernet port and uses two built-in fans to move air through the chassis. No additional controllers, cables or software licences are mentioned in the supplied data. The package therefore assumes the operator already has a compatible network switch, a 220V power distribution unit and a rack or shelf that accepts the 400 x 195 x 290mm form factor. Buyers who lack these supporting items must source them separately.

Environmental limits of 10 to 40 °C

Operation is specified between 10 °C and 40 °C with relative humidity from 10 % to 90 %. The manufacturer also lists a noise level of 75 dB, while another data point shows 85 dB; the higher figure should be planned for in shared spaces. The 220V supply requirement is strict — incorrect voltage can damage the hardware. Sites without stable 220V power, adequate cooling capacity or sound isolation cannot run this miner reliably.

Punti di forza

  • Delivers 225 TH/s hashrate for maximum Bitcoin output
  • Operates at 3564 W power draw for efficient energy use
  • Runs at 75 dB noise level for quieter facility deployment
  • Compact 400 x 195 x 290 mm frame fits dense rack layouts
  • Functions reliably from 10 °C to 40 °C ambient temperature

Caratteristiche tecniche

BrandANTMINER
SeriesS21
ModelS21PLUS
TypeMining Machine/Miner
Crypto AlgorithmSHA256
Compatible CurrencyBitcoin (BTC)
Mining HardwareASIC
Hashrate225TH/S
Noise level85dB
Power Consumption3564W

Domande su questo articolo

Which part will likely need replacement first on the Antminer S21+?

The two cooling fans are the only moving parts and will wear out before the ASIC boards under continuous operation.

What limit appears first when the Antminer S21+ runs continuously at 3564 W?

The operating temperature ceiling of 40 °C is reached before any power or hashrate ceiling, so inlet cooling capacity becomes the bottleneck.

How loud and how hot does the Antminer S21+ get during all-day mining?

It produces 75 dB to 85 dB of noise with its dual fans while exhausting enough heat to keep the chassis within the 10–40 °C operating window at 3564 W.

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