Bitmain Antminer S21 XP


Condition: Brand new in box
Efficiency: 13.5 J/T

Availability: In stock (can be backordered)

Available on November 8, 2024
SKU: ATBS21XP Categories: , Tag:

Bulk Discounts

3 - 90.5%$6,661.53
10 - 241%$6,628.05
25 - 992%$6,561.10
100 +3%$6,494.15

Brand New Bitmain Antminer S21 XP

  • Comes with ~1 year manufacturer warranty.
  • PSU included
  • Note: Antminer S21 XP runs on 220-277V voltage, it will not operate on household 110-120V voltage


Product Glance 
ModelS21 XP
Algorithm | CryptocurrencySHA256 | BTC/BCH
Hashrate, TH/s270
Power on wall @25°C, Watt3645
Power efficiency on wall @25°C, J/TH13.5
Detailed Characteristics 
Power supply 
Power supply AC input voltage, Volt(1-1)220~277
Power supply AC input frequency range, Hz50~60
Power supply AC input current, Amp20
Adapted AC output power requirement, W4000
Hardware Configuration 
Network connection modeRJ45 Ethernet 10/100M
Miner size (length*width*height, w/o package),mm(2-1)450*219*293
Miner size (length*width*height, with package),mm680*390*450
Net weight, kg20
Gross weight, kg22
Environment requirements 
Operation temperature,°C-20~45
Storage temperature,°C-20~70
Operation humidity(non-condensing) , RH10%~90%
Operation altitude, m≤2000

S21 Pro Mining Profitability Calculator

Frequently Asked Questions

Mining efficiency is highly dependent on ambient air temperature. If your miner is pulling more power than expected, in most cases it is due to a higher ambient temperature. You can improve mining efficiency by preventing mixing of hot exhaust air with intake air. 

All 4 fans on Antminer S21 Pro have 4-pin square fan connectors. The fans are 140mm wide and much larger than those on previous antminers. 


Stock fans on Antminers can be very loud (~75 dB) at full speed. There are however multiple ways to make them quieter. 

  1. First way to make them quieter is to run them at substantial underclocking. This will significantly reduce the hashrate, but will also reduce fan noise, since the fans don’t have to run at full speed when underclocked. 
  2. Another way to reduce noise is by replacing stock fans with an inline AC infinity fan. You can learn more about this here. This method allows running the miners on stock hashrates and may even allow some overclocking in many cases. 
  3. Third way to reduce fan noise is by running the miners in immersion mode. In this method the miners are immersed in vats of mineral oil or dielectric fluid. This significantly improves heat transfer and enables substantial overclocking. Immersion mining however voids all warranty, is more complex to setup and immersion fluid can act as a solvent and damage some mining gear. We believe that this is still an experimental technology reserved for the most technically inclined. We do not recommend immersing Antminers to most customers for this reason. 

Stock Antminer firmware does not allow much flexibility in terms of overclocking/underclocking , fan control, automated temperature control etc. In most cases you would need aftermarket firmware to enable quieter operation. 

Yes, you can either take delivery yourself or ship this to your hosting company by providing their address under the shipping address field on checkout page. 

Weight48 lbs
Dimensions28 × 18 × 14 in

St. Louis, USA, Hong Kong

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Bitmain Antminer S21 XP

Availability: In stock (can be backordered)

Available on November 8, 2024
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