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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04 - 06 Apr, 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 S19j pro 104th s removeBitmain Antminer E9 Pro 3.68Gh/s removeAntminer ALPH Miner AL1 removeCanaan Avalon A15 Pro removeAntminer S19k Pro 136Th remove
NameBitmain Antminer S21 removeBitmain antminer S19j pro 104th s removeBitmain Antminer E9 Pro 3.68Gh/s removeAntminer ALPH Miner AL1 removeCanaan Avalon A15 Pro removeAntminer S19k Pro 136Th remove
ImageAntminer-S21 XPBitmain antminer S19j proAntminer E9 Pro - 3680MH/s Ethereum Classic MinerAntminer ALPH Miner AL1Canaan Avalon miner Pro altAntminer S19k Pro
SKUANTS21ANTS19JPANTE9PROALPHAL1A15PS19k
Rating
Price$2,300.00$1,100.00$850.00 Original price was: $10,900.00.Current price is: $8,000.00.$2,600.00$700.00
Stock

104 in stock

62 in stock

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40 in stock

142 in stock

110 in stock

WeightN/AN/A20.2 kg16.5 kg14.9 kg13.2 kg
DimensionsN/AN/AN/AN/AN/AN/A
Additional information
color

Black, DarkSlateGrey, Silver

Algorithm

SHA-256

Algorithm

SHA-256

color

Gold, Silver, White

Weight 20.2 kg
color

Brown, Gold, Silver

Algorithm

Ethash/Etchash

Weight 16.5 kg
Algorithm

Blake3

Weight 14.9 kg
Color

Black, White

Algorithm

SHA-256

Weight 13.2 kg
Algorithm

SHA-256

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.Model Antminer S19j Pro (104Th) from Bitmain mining SHA-256 algorithm with a maximum hashrate of 104Th/s for a power consumption of 3068W.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.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.

Canaan Avalon A15Pro‑221T – High‑Performance SHA‑256 Bitcoin ASIC Miner

Engineered for serious Bitcoin mining, the Avalon A15Pro‑221T by Canaan delivers robust hashrate and efficient power usage, ideal for professional farms and scaling operations

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.
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