Bitmain Antminer S21 225 TH/s – Next-Generation Computing Power for Air-Cooled Farms
Take aggressive command of your data center hashrate density with the enhanced Bitmain Antminer S21 225 TH/s. Engineered to serve as a flagship pillar of Bitmain’s air-cooled hardware lineup, this powerful machine pushes a massive 225 Terahashes per second out of a classic plug-and-play server chassis. By fine-tuning processing architectures to squeeze maximum efficiency out of a standard air-flow setup, this powerhouse gives fleet operators a premier hardware scaling asset without the steep upfront expense or structural plumbing requirements of liquid or hydro setups.
Operating natively on the dominant SHA-256 cryptographic algorithm, this high-uptime miner delivers stable, long-term computing power to maximize daily yields across Bitcoin (BTC), Bitcoin Cash (BCH), and Bitcoin SV (BSV).
Technical Specifications
| Feature | Specification |
| Manufacturer | Bitmain |
| Model | Antminer S21 (225 TH/s Variant) |
| Hashrate | 225 TH/s $\pm 3\%$ |
| Power Consumption (on wall) | $\sim 3375\text{W} \pm 5\%$ @ $25^{\circ}\text{C}$ |
| Power Efficiency | 15.0 J/TH $\pm 5\%$ |
| Algorithm | SHA-256 (BTC / BCH / BSV) |
| Cooling Architecture | Air-Cooled (4 x High-Speed Industrial Fans) |
| Power Interface / Plug Type | Dual C19 (20A Heavy-Duty Connectors) |
| Networking Interface | RJ45 Ethernet 10/100M |
| Operational Noise Level | $\sim 76 \text{ dBA}$ |
| Dimensions (L x W x H) | 400 x 195 x 290 mm |
| Net Weight | 15.40 kg |
Key Features & Performance Highlights
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Elite 15.0 J/TH Hashing Efficiency: Driven by Bitmain’s highly refined custom semiconductor architecture, the S21 achieves an exceptional performance curve of just 15.0 Joules per Terahash. Minimizing power leakage directly on the boards helps cushion your operational overhead during difficult market phases.
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Upgraded Air-Cooled Computing Density: Boosting processing outputs up to 225 Terahashes within a compact chassis layout enables commercial operations to optimize existing server shelves. Pack unmatched computing volume into your facility line without expanding physical real estate.
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Heavy-Duty Cross-Flow Thermal System: Outfitted with four high-RPM heavy industrial fans running in a parallel push-pull wind tunnel layout. High-velocity air is forced across high-density heat dissipation grids, eliminating thermal throttling risks during uninterrupted 24/7 loads.
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Smart Integrated Circuit Resiliency: The attached premium enterprise power supply unit features automated voltage-tracking defense frameworks. It actively isolates delicate microchips against sudden power drops, brief shorts, or facility grid imbalances common to multi-megawatt environments.
Why Buy From CryptoMiners24?
Procuring your elite hashing infrastructure through CryptoMiners24 guarantees a premier enterprise hardware partnership:
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Fully Insured Priority Freight: We route high-value, heavy industrial equipment exclusively through trusted premium logistics lines (DHL Express, FedEx, UPS) with comprehensive transit insurance included.
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100% Authentic Factory-Sealed Stock: All high-performance units are dispatched directly from our verified inventory, complete with pristine original manufacturer seals and active serial numbers.
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Comprehensive Enterprise Logistics Support: Our specialized support desk provides direct assistance with tariff documentation, customs clearance logistics, and hardware deployment infrastructure.
Bring next-generation air-cooled chip density to your facility. Add the Bitmain Antminer S21 225 TH/s to your layout today.
