ChainReview
SHA-256 / Air

Bitmain Antminer S21 XP

A high-efficiency air-cooled Bitcoin ASIC for operators with strong power delivery, airflow, and noise tolerance.

270 TH/s3645W13.5 J/T
Bitmain Antminer S21 XP
Specs should be verified against the exact seller, batch, firmware, and operating environment before purchase.
Daily energy87.5 kWh
Heat output12,437 BTU/hr
Primary coinsBitcoin / BCH
CoolingAir

Strengths

  • Strong SHA-256 hashrate in an air-cooled form factor.
  • Clear electricity model: 3.645 kW is about 87.5 kWh per day at full uptime.
  • Useful fit for readers who want current-generation Bitcoin mining without hydro infrastructure.

Risks to model

  • Still produces roughly 12,400 BTU/hr of heat.
  • Noise, summer intake temperatures, and dust can turn specs into downtime.
  • Profit depends heavily on hashprice and delivered electricity cost.
Bitmain S21 XP product pageRead ChainReview guideOpen ROI calculator
Compare next

Related miner profiles

SHA-256 Hydro

Bitmain Antminer S21 XP+ Hyd

A hydro-cooled SHA-256 miner built for dense deployments where the operator can handle coolant loops and heat rejection.

480 TH/s / 5280WScrypt Air

Bitmain Antminer L9

A Scrypt ASIC for Litecoin and Dogecoin merged-mining economics rather than Bitcoin hashprice modeling.

16 GH/s / 3360WSHA-256 Hydro

MicroBT WhatsMiner M63S

A hydro SHA-256 machine where the main question is whether site infrastructure can support a 7.3 kW continuous load.

408 TH/s / 7344W
Editorial policy

Research-first coverage with clear ad separation.

ChainReview separates sponsored placements from editorial analysis. Crypto assets, mining operations, and presales are risky, and all coverage is informational only.