Antminer T21
Antminer T21
The Antminer T21 is a Bitcoin miner designed for miners who value cost-efficiency. It offers a reasonable hashrate with reasonable power consumption, making it ideal for miners on a tight budget. The device features a reliable cooling system that ensures stable operation. With the T21, miners can keep their operating costs low without sacrificing performance.
Further details about the Antminer T21:
- Manufacturer : Bitmain
- Model : T21
- Hashrate : 190 TH/s
- Energy efficiency : 19.5 J/TH
- Mining algorithm : SHA-256
- Power consumption : 3,705 watts (+/- 5%)
- Network connection : Ethernet
- Dimensions (without packaging) : 370 × 195.5 × 290 mm
- Weight (with packaging) : 16 kg
- Manufacturer's warranty : 12 months
- PSU : Included
The purchasing process with us...
This is how the purchase process works at miners.de
1. Select products & advice
Simply select the right mining products on our website. If you have any questions or need advice, we're happy to help you find the perfect equipment.
2. Shipping to your desired location
After you place your order, we will ship the hardware securely and insured directly to your home, your mining farm, or a warehouse of your choice.
3. Support & Setup
Even after delivery, we won't leave you alone. We'll support you with setup and are available to answer any technical questions you may have.
Our bestsellers
Discover our mining products
Our partners
Do you have a question? We're here to help
Check out our customers' most frequently asked questions. Still have questions? Contact our customer support team.
Zahlung & Versand der Miner
Die Versanddauer von unserem Lager in Hongkong oder Deutschland hängt vom Lagerbestand und dem Zielland ab. In der Regel beträgt die Lieferzeit 3–10 Werktage.
Die Ware wird in der Regel direkt aus unserem Lager in Hongkong an sie geliefert.
Wenn die Ware aus Deutschland kommt, ist dies gekennzeichnet und es wird MwSt. berechnet.
Ein Import über Miners.de ist ebenfalls möglich – kontaktieren Sie uns einfach.
Wir akzeptieren folgende Zahlungsmethoden:
- Vorkasse per Banküberweisung
- Barzahlung
What is an ASIC miner?
An ASIC (Application-Specific Integrated Circuit) miner is a specially designed device optimized for mining a specific cryptocurrency, such as Bitcoin. Compared to GPUs or CPUs, it offers significantly higher computing power and efficiency.
How long does an ASIC miner last?
The lifespan of an ASIC is typically 3–5 years, depending on usage, cooling, and maintenance. Some devices can last longer if well maintained.
Can I buy a used ASIC miner?
Yes, but only from qualified resellers! Used miners can already be very worn. It's important to pay attention to the condition of the hashboards , the fan performance , and proper maintenance.
Energy efficiency in ASIC miners – What does it mean?
The energy efficiency of ASIC miners is measured in joules per terahash (J/TH) and describes how much energy a miner consumes to generate 1 TH/s (terahash per second) of computing power.
Lower J/TH value = Higher efficiency
A miner with 20 J/TH is more efficient than one with 30 J/TH because it requires less power to achieve the same computing power.