HomeShopSHA-256 MinersBitmain Antminer S21

Bitmain Antminer S21

(3 customer reviews)

$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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15 - 17 Nov, 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@asicminerbulk.com  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://asicminerbulk.com/

Additional information

color

Black, DarkSlateGrey, Silver

Algorithm

SHA-256

3 reviews for Bitmain Antminer S21

  1. Michael Rico –

    Very impressed with the Antminer S21 performance. The hashrate is stable and matches the specs advertised. Delivery was faster than expected and the packaging was secure. Setup was straightforward, and it’s been running efficiently since day one. Solid experience overall.

  2. Carlos Micco –

    El Antminer S21 funciona perfectamente. El rendimiento es constante y el consumo energético es razonable para su potencia. El envío fue rápido y el servicio al cliente respondió a mis preguntas sin problemas. Muy satisfecho con la compra

  3. Julien Dee –

    Le Antminer S21 offre d’excellentes performances. L’installation était simple et la machine fonctionne de manière stable. La livraison a été rapide et bien organisée. Je recommande pour ceux qui cherchent un mineur fiable

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Quick Comparison

Bitmain Antminer S21 removeMicroBT Whatsminer m30s++ removeCanaan Avalon Nano 3S 6TH/s removeBitmain Antminer E9 Pro 3.68Gh/s removeCanaan Avalon A16XP-300T removeBitmain Antminer S21 XP Bitcoin Miner remove
NameBitmain Antminer S21 removeMicroBT Whatsminer m30s++ removeCanaan Avalon Nano 3S 6TH/s removeBitmain Antminer E9 Pro 3.68Gh/s removeCanaan Avalon A16XP-300T removeBitmain Antminer S21 XP Bitcoin Miner remove
ImageAntminer-S21 XPMicroBT Whatsminer m30s++Avalon Nano 3SAntminer E9 Pro - 3680MH/s Ethereum Classic MinerCanaan avalon A16XPAntminer-S21 XP
SKUANTS21WM30s++AVANANO3SANTE9PROAVAA16XPS21XP
Rating
Price$2,300.00 Original price was: $1,050.00.Current price is: $950.00.$245.00$850.00$4,000.00 Original price was: $5,600.00.Current price is: $3,100.00.
Stock

104 in stock

100 in stock

167 in stock

99 in stock

98 in stock

118 in stock

WeightN/A11 kg0.86 kg20.2 kg14.9 kg18.7 kg
DimensionsN/AN/AN/AN/AN/AN/A
Additional information
color

Black, DarkSlateGrey, Silver

Algorithm

SHA-256

Weight 11 kg
Color

Black, Silver

Algorithm

SHA-256

Weight 0.86 kg
Algorithm

SHA-256

color

Black, Red, White

Weight 20.2 kg
color

Brown, Gold, Silver

Algorithm

Ethash/Etchash

Weight 14.9 kg
Algorithm

SHA-256

Weight 18.7 kg
Color

Silver, Black, Gold

Memory

128 Gb, 256 Gb, 512Gb, 1 Tb

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.Whatsminer M30S++ is Manufactured By MicroBT And it’s mining SHA-256 algorithm which running maximum hashrate of 110Th/s for a power consumption of only 3472W.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.Antminer E9 Pro Is Manufactured By Bitmain And it’s mining EtHash algorithm which running maximum hashrate of 3.68Gh/s for a power consumption of only 2200W.Avalon A16XP is manufactured by Canaan which operates under the SHA-256 algorithm with a maximum hashrate of 300Th/s and power consumption of 3850W.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.
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