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

AFRNDK

AFRNDK Antminer S21 XP 270TH/s 3645W mining hardware

SKU CH-HZDV-AARVQ

SHA-256 ASIC miner delivers 270 TH/s at 3645 W with 13.5 J/TH efficiency, air-cooled by two fans at 75 dB, operating from 5 to 45 °C on 220 V input

  • Hash rate270TH/S
  • Hash algorithmSHA-256
  • Supported coinsBitcoin (BTC)
  • Miner hardwareASIC
  • Power draw3645 W
  • Product typeMining Machine/Miner
  • 270 TH/s hashrate delivers maximum Bitcoin mining throughput
  • 5 J/TH efficiency reduces electricity cost per terahash
  • 3645 W power draw matches high-density farm infrastructure
  • 75 dB noise level suits managed data-centre environments
  • 5 to 45 °C operating range ensures stable performance in varied climates

Purpose and operator

The AFRNDK Antminer S21 XP is an ASIC miner built for the SHA-256 algorithm and targets Bitcoin (BTC). It delivers a hashrate of 270TH/s while drawing 3645W, reaching an efficiency of 13.5J/TH. The unit suits professional mining operations that prioritise energy efficiency over raw density.

Build integration

The chassis measures 400 x 195 x 290mm and connects through a single Ethernet port. Two onboard fans provide air cooling, producing a noise level of 75dB that requires a ventilated rack or dedicated room. Power input must be 220V; incorrect voltage can damage the hardware. Operating temperature range is 5 to 45°C.

Sustained-load behaviour

At continuous load the miner maintains its rated 270TH/s within the 5 to 45°C envelope. The 13.5J/TH efficiency figure is quoted for steady-state operation rather than a short burst. Stable 220V supply and adequate airflow are essential to keep temperatures in range and prevent thermal throttling.

How it compares

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

Price $6,686.99
Pricier than about 93% 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 lineS21XP
Model nameS21XP
Product typeMining Machine/Miner
Performance
Hash rate270TH/S
Hash algorithmSHA-256
Processor
Miner hardwareASIC
Power
Power draw3645 W
Compatibility
Supported coinsBitcoin (BTC)

Questions about this item

What power efficiency does the 270 TH/s hashrate reach at 3645 W?

The miner delivers 13.5 J/TH at the rated 270 TH/s and 3645 W power draw.

What noise level and heat range should be expected when the unit runs continuously?

The two fans produce 75 dB and the operating temperature window is 5 to 45 °C.

Which voltage supply and network connection are required before the miner can start?

A 220 V power source and an Ethernet cable are needed for operation.

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