he Antminer S21 Pro+ is designed for serious Bitcoin miners who need more power, greater efficiency, and enhanced durability. The S21 Pro takes everything you know about the S19 and S21 series and turns it up a notch.
Compact Yet More Powerful Design
While the original Bitmain Antminer S21 was similar in size to the S19 series, the S21 Pro+ is significantly larger and sturdier. With a net weight of 44 lbs, about 30% heavier than the S21, this model incorporates a wider body, longer hashboards, and a redesigned control board layout. Its larger and thicker packaging foam ensures the unit arrives safe, though it may take a little extra effort to unbox.
Optimized Cooling with Larger Fans
The Antminer S21 Pro uses four 140mm high-performance fans (compared to 120mm fans in previous models) to improve airflow and heat dissipation. This setup reduces RPM stress on the fans, improves longevity, and creates more overclocking headroom.
Next-Generation Performance
Thanks to fewer but far more powerful chips (65 chips vs. 108 in the S21), each chip hashes at approximately 1.2 TH/s, doubling the single-chip hashrate of the S21. This allows the S21 Pro to deliver top-tier efficiency for large-scale mining farms or high-end home setups.
Improved Control Board & Hashboards
Bitmain redesigned the control board to fit the S21 Pro’s wider chassis. The new board cover uses two screws for easier maintenance, though the front panel no longer includes an LCD display. Hashboards feature aluminum backing with bolt-on heatsinks and improved thermal compound for consistent cooling performance.
Reliable Power Supply
The APW17 PSU powers the Antminer S21 Pro, maintaining stability even under high loads. With its efficient power delivery, it complements the miner’s robust cooling to maximize uptime and profitability.
Why Choose the Antminer S21 Pro+?
- Next-generation ASIC miner with exceptional performance and efficiency
- Larger fans and improved airflow for cooler operation
- Reinforced design and packaging for added durability
- Low Power Mode for reduced energy costs without sacrificing hashrate
- Ideal for serious Bitcoin miners and professional mining operations
Conclusion
With superior chips, bigger fans, and a redesigned layout, the Antminer S21 Pro+ delivers a significant boost over the S21 and S19 series. Whether you’re expanding your mining farm or upgrading existing hardware, this model offers maximum profitability, stability, and efficiency.
- Comes with ~1 year manufacturer warranty.
- PSU included – APW17
- Note: Antminer S21 Pro runs on 220-277V voltage, it will not operate on household 110-120V voltage
Specifications
|
Product Glance
|
|
|
Model
|
S21 Pro+
|
|
Algorithm | Cryptocurrency
|
SHA256 | BTC/BCH
|
|
Hashrate, TH/s
|
234|245
|
|
Power on wall @25°C, Watt
|
3510
|
|
Power efficiency on wall @25°C, J/TH
|
15
|
|
Detailed Characteristics
|
|
|
Power supply
|
|
|
Power supply AC input voltage, Volt(1-1)
|
220~277
|
|
Power supply AC input frequency range, Hz
|
50~60
|
|
Power supply AC input current, Amp
|
20
|
|
Adapted AC output power requirement, W
|
4000
|
|
Hardware Configuration
|
|
|
Network connection mode
|
RJ45 Ethernet 10/100M
|
|
Miner size (length*width*height, w/o package),mm(2-1)
|
450*219*293
|
|
Miner size (length*width*height, with package),mm
|
680*390*450
|
|
Net weight, kg
|
20
|
|
Gross weight, kg
|
22
|
|
Noise@25℃，dBA
|
76
|
|
Environment requirements
|
|
|
Operation temperature,°C
|
-20~45
|
|
Storage temperature,°C
|
-20~70
|
|
Operation humidity(non-condensing) , RH
|
10%~90%
|
|
Operation altitude, m
|
≤2000
|
