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 | Canaan Avalon Q remove | MicroBT Whatsminer M63S+ Hydro remove | Canaan Avalon A16XP-300T remove | Bitdeer SealMiner A2 Pro Hydro remove | Antminer S19k Pro 136Th remove | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Name | Bitmain Antminer S21 remove | Canaan Avalon Q remove | MicroBT Whatsminer M63S+ Hydro remove | Canaan Avalon A16XP-300T remove | Bitdeer SealMiner A2 Pro Hydro remove | Antminer S19k Pro 136Th remove | ||||||||||||||||||||||||||
| Image | |  |  |  |  |  | ||||||||||||||||||||||||||
| SKU | ANTS21 | AVALONQ | M63S+ | AVAA16XP | A2Pro | S19k | ||||||||||||||||||||||||||
| Rating | ||||||||||||||||||||||||||||||||
| Price | $2,300.00 | $1,260.00 | Original price was: $4,400.00.$3,500.00Current price is: $3,500.00. | $4,000.00 | $7,500.00 | $700.00 | ||||||||||||||||||||||||||
| Stock | 104 in stock | 130 in stock | 200 in stock | 98 in stock | 150 in stock | 110 in stock | ||||||||||||||||||||||||||
| Weight | N/A | 10.5 kg | 27.5 kg | 14.9 kg | 20.5 kg | 13.2 kg | ||||||||||||||||||||||||||
| Dimensions | N/A | N/A | 66.30 × 48.30 × 8.69 cm | N/A | N/A | N/A | ||||||||||||||||||||||||||
| Additional information |
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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 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 | Whatsminer M63S+ Hydro is manufactured by MicroBT which operates under the SHA-256 algorithm with a maximum hashrate of 430Th/s and power consumption of 7208W. | 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. | The Bitdeer SealMiner A2 Pro Hydro is an industrial-grade, water-cooled ASIC miner designed for high-performance Bitcoin (SHA-256) mining. It delivers a high hashrate of 500 TH/s with a power consumption of 7450W, yielding an efficiency of 14.9 J/T. The Hydro cooling system ensures superior heat dissipation for high efficiency | 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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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