HomeShopSHA-256 MinersBitmain Antminer S21

Bitmain Antminer S21

$2,300.00

The Bitmain Antminer S21 is a high-efficiency ASIC miner for SHA-256 algorithms (Bitcoin/BCH), delivering ~200 TH/s at 3,500W (17.5 J/TH). It features air cooling, 4 high-speed fans, and operates between 220-277V, making it a top choice for professional, energy-efficient mining. 

104 in stock

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18 - 20 May, 2026
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Description

The Antminer S21 by Bitmain features the powerful BM1368 chip, delivering 200 TH/s hashrate with 17.5 J/TH efficiency and 3500W power consumption. It features air cooling, 4 high-speed fans, and operates between 220-277V, making it a top choice for professional, energy-efficient mining.

Key Specifications (Standard S21 Model):
  • Hashrate: 200 TH/s
  • Power Consumption: 3500W
  • Efficiency: 17.5 J/TH
  • Dimensions: 400 x 195 x 290 mm
  • Weight: 15.4 kg
  • Noise Level: 75-76 dB
  • Algorithm: SHA-256

Purchasing Guidelines


1. Shipments will be scheduled on a first-paid-first-ship basis for orders on which ASIC MINERS has received full payment.

2. You are responsible for any customs delays or returned shipments due to a lack of proper documentation. It’s highly recommended to be aware of local customs clearance policies and prepare all customs documentation ahead of time to avoid delays or unexpected costs.

3. Please contact info@asicminers.org  for additional information on customs clearance for ASIC MINERS products.

Warranty

1. A 365-day warranty is provided starting from the shipping date. ASIC MINERS will cover shipping costs when shipping a replacement unit within the warranty period.

2. The warranty only applies to the original purchaser who purchased the machine directly from ASICMINERS.ORG. Once the miner is resold, warranty coverage becomes the responsibility of the re-seller.

3. If the user fails to use the product per the given instructions, specifications, and conditions provided or changes the function settings of the unit without ASIC MINER’s prior consent, ASIC MINERS will not be liable for any damage arising therefrom.

4. Click here for a complete list of the Terms & Conditions that apply to all orders placed on https://asicminers.org/

Additional information

color

Black, DarkSlateGrey, Silver

Algorithm

SHA-256

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Quick Comparison

Bitmain Antminer S21 removeBitmain Antminer S21 XP Bitcoin Miner removeCanaan Avalon Nano 3S 6TH/s removeMicroBT WhatsMiner M60S removeBitmain Antminer S23 hyd. 3u removeBitmain Antminer ALPH Miner AL1 remove
NameBitmain Antminer S21 removeBitmain Antminer S21 XP Bitcoin Miner removeCanaan Avalon Nano 3S 6TH/s removeMicroBT WhatsMiner M60S removeBitmain Antminer S23 hyd. 3u removeBitmain Antminer ALPH Miner AL1 remove
ImageAntminer-S21 XPAntminer-S21 XPAvalon Nano 3Smicrobt whatsminer m60sBitmain Antminer_S23_Hyd_3UAntminer ALPH Miner AL1
SKUANTS21S21XPAVANANO3SM60SU3S23HYDALPHAL1
Rating
Price$2,300.00 Original price was: $5,600.00.Current price is: $3,100.00.$245.00$1,600.00 Original price was: $12,500.00.Current price is: $10,500.00.$10,900.00
Stock

104 in stock

118 in stock

167 in stock

95 in stock

79 in stock

60 in stock

WeightN/A18.7 kg0.86 kg13.5 kg18.2 kg16.5 kg
DimensionsN/AN/AN/AN/AN/AN/A
Additional information
color

Black, DarkSlateGrey, Silver

Algorithm

SHA-256

Weight 18.7 kg
Color

Silver, Black, Gold

Memory

128 Gb, 256 Gb, 512Gb, 1 Tb

Weight 0.86 kg
Algorithm

SHA-256

color

Black, Red, White

Weight 13.5 kg
Algorithm

SHA-256

Weight 18.2 kg
Color

Gold, Black, Silver

Algorithm

SHA-256

Weight 16.5 kg
Algorithm

Blake3

DescriptionThe Bitmain Antminer S21 is a high-efficiency ASIC miner for SHA-256 algorithms (Bitcoin/BCH), delivering ~200 TH/s at 3,500W (17.5 J/TH). It features air cooling, 4 high-speed fans, and operates between 220-277V, making it a top choice for professional, energy-efficient mining.Bitmain Antminer S21 XP mining the SHA 256 algorithm has a maximum hash rate of 270Th/s at a power consumption of 3645W. Weighing around 18.7 kgs, Bitmain Antminer S21 XP gives an energy efficiency of 13.5j/Th. The ASIC comes with a warranty period of 365 days.Avalon Nano 3S is manufactured by Canaan which operates under the SHA-256 algorithm with a maximum hashrate of 6Th/s and power consumption of 140W.Whatsminer M60S is Manufactured By MicroBT And it’s mining SHA-256 algorithm which running maximum hashrate of 186Th/s for a power consumption of only 3441W.

Bitmain Antminer S23 Hyd 3U (1.16 PH/s) – Ultra-High Performance Hydro-Cooled Bitcoin ASIC Miner. The New Benchmark in Bitcoin Mining Power and Efficiency

Antminer AL1 is manufactured by Bitmain which operates under the Blake3 algorithm with a maximum hashrate of 15.6Th/s and power consumption of 3510W.
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