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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06 - 08 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@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 removeAntminer S19k Pro 136Th removeMicroBT Whatsminer M63 Hydro removeNerdMiner NerdOCTAxe (9.6TH/s) removeMicroBT WhatsMiner M60S removeAntminer ALPH Miner AL1 remove
NameBitmain Antminer S21 removeAntminer S19k Pro 136Th removeMicroBT Whatsminer M63 Hydro removeNerdMiner NerdOCTAxe (9.6TH/s) removeMicroBT WhatsMiner M60S removeAntminer ALPH Miner AL1 remove
ImageAntminer-S21 XPAntminer S19k Prowhatsminer-m63NerdMiner_NerdOCTAxemicrobt whatsminer m60sAntminer ALPH Miner AL1
SKUANTS21S19kM63HNERDOCTXM60SALPHAL1
Rating
Price$2,300.00$700.00$2,550.00$490.00$1,600.00$10,900.00
Stock

104 in stock

110 in stock

80 in stock

50 in stock

95 in stock

40 in stock

WeightN/A13.2 kg27.5 kg3 kg13.5 kg16.5 kg
DimensionsN/AN/AN/AN/AN/AN/A
Additional information
color

Black, DarkSlateGrey, Silver

Algorithm

SHA-256

Weight 13.2 kg
Algorithm

SHA-256

Weight 27.5 kg
color

Black, Orange, Silver

Algorithm

SHA-256

Weight 3 kg
Color

White, Black

Weight 13.5 kg
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.The Bitmain Antminer S19k Pro is an air-cooled ASIC miner designed for the SHA-256 algorithm, primarily used for mining Bitcoin (BTC). Released in mid-2023, it is widely considered one of the most efficient models of the S19 generation, balancing high performance with a competitive price point.The MicroBT Whatsminer M63 Hydro series consists of high-performance, liquid-cooled ASIC miners designed for the SHA-256 algorithm, primarily used for mining Bitcoin (BTC) and Bitcoin Cash (BCH). Released in October 2023, these units utilize a fan-less hydro cooling system that reduces noise to approximately 50dB and allows for high-density 4U rack-mount deploymentsNerdOCTAxe is manufactured by NerdMiner and supports the SHA-256 algorithm, offering hashrates of 9.6Th/s with consistent performance and a power consumption of 160W.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.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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