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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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.
- 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
Quick Comparison
| Bitmain Antminer S21 remove | Bitmain Antminer S23 remove | MicroBT Whatsminer M50s remove | Canaan Avalon A15 Pro remove | Canaan Avalon Q remove | MicroBt Whatsminer M61 remove | |||||||||||||||||||||||||||||||||
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| Name | Bitmain Antminer S21 remove | Bitmain Antminer S23 remove | MicroBT Whatsminer M50s remove | Canaan Avalon A15 Pro remove | Canaan Avalon Q remove | MicroBt Whatsminer M61 remove | ||||||||||||||||||||||||||||||||
| Image | |  |  |  |  |  | ||||||||||||||||||||||||||||||||
| SKU | ANTS21 | AS23 | MBTM50S | A15P | AVALONQ | WM61 | ||||||||||||||||||||||||||||||||
| Rating | ||||||||||||||||||||||||||||||||||||||
| Price | $2,300.00 | $4,500.00 | $690.00 | $2,600.00 | $1,260.00 | $1,900.00 | ||||||||||||||||||||||||||||||||
| Stock | 104 in stock | 150 in stock | 76 in stock | 142 in stock | 130 in stock | 102 in stock | ||||||||||||||||||||||||||||||||
| Weight | N/A | 15.8 kg | 12.8 kg | 14.9 kg | 10.5 kg | 10.5 kg | ||||||||||||||||||||||||||||||||
| Dimensions | N/A | N/A | N/A | N/A | N/A | N/A | ||||||||||||||||||||||||||||||||
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| Description | 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. | The Bitmain Antminer S23 is a next-generation SHA-256 ASIC miner series released in early 2026. It represents a major leap in efficiency, with the flagship hydro-cooled model reaching 9.5 J/TH—a roughly 40% improvement over the previous S21 series | Whatsminer M50S is Manufactured By MicroBT And it’s mining SHA-256 algorithm which running maximum hashrate of 126Th/s for a power consumption of only 3276W. | Canaan Avalon A15Pro‑221T – High‑Performance SHA‑256 Bitcoin ASIC MinerEngineered 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 Canaan Avalon Q is a home-focused Bitcoin ASIC miner released in early 2025, designed specifically for quiet, residential operation. It delivers a hashrate of 90 TH/s with an energy efficiency of 18.6 J/TH, positioning it as a professional-grade alternative for home miners who want higher yields than entry-level "heater" miners like the Avalon Nano 3 | The MicroBT WhatsMiner M61 is a high-performance ASIC miner released around December 2024. Designed specifically for the SHA-256 algorithm, it is used to mine cryptocurrencies like Bitcoin (BTC) and Bitcoin Cash (BCH).It features, depending on the model/settings, optimized energy efficiency and robust air-cooling for professional or home mining. | ||||||||||||||||||||||||||||||||
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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.
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
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