Bitdeer SealMiner A3 Air (260Th/s)

The Bitdeer SealMiner A3 Air is a high-performance air-cooled ASIC miner engineered exclusively for the SHA-256 algorithm, delivering robust and reliable processing power for Bitcoin (BTC) mining. Released in September 2025, this industrial-grade air-cooled solution achieves an impressive hash rate of 260 Th/s while drawing just 3640W of power, resulting in an outstanding energy efficiency of 14 J/Th. As the air-cooled counterpart to the A3 Hydro series, the SealMiner A3 Air offers an ideal balance of raw computational output and operational economy, positioning itself as the premier choice for professional mining facilities seeking maximum hash rate per watt with the simplicity, accessibility, and cost-effectiveness of traditional air-cooled deployment.

Engineered with Bitdeer's commitment to innovation and durability, the SealMiner A3 Air features a compact, space-optimized chassis, measuring 197 x 365 x 292mm and weighing 15,500g. This streamlined footprint enables exceptional hash rate density in multi-tier rack configurations, allowing operators to maximize computational output per square meter—a critical advantage in high-density data center environments where floor space is at a premium. The advanced thermal architecture, powered by two high-speed fans, ensures superior heat dissipation during continuous 24/7 operation, maintaining stable performance under sustained heavy loads with a consistent noise level of 75dB—a practical and expected output for an air-cooled machine delivering 260 terahash of sustained computational force.

What truly distinguishes the A3 Air is its refined silicon architecture, which delivers exceptional efficiency and performance density comparable to its hydro-cooled sibling—without the complexity or infrastructure demands of liquid cooling systems. This advanced engineering enables the A3 Air to deliver remarkable hash rate output while maintaining moderate power consumption, translating directly to improved profit margins and reduced operational costs—critical advantages in competitive mining environments where every watt matters.

Designed for maximum deployment flexibility, the A3 Air operates on standard high-voltage 220V – 277V power input, offering greater compatibility with existing infrastructure across diverse facility types. This voltage range simplifies deployment, reducing the need for costly electrical upgrades and enabling seamless integration into both established data centers and growing mining operations. Connectivity is facilitated through the standard Ethernet interface, providing low-latency communication and effortless integration with all major mining management platforms, ensuring complete control and real-time performance visibility. Built to thrive in demanding environments, the A3 Air maintains flawless performance across a wide temperature range of 5 to 45°C and supports relative humidity levels between 5% and 95%, offering exceptional operational flexibility across diverse global climates and facility conditions.

By choosing the Bitdeer SealMiner A3 Air, you are securing a dependable, future-proof Bitcoin mining asset that delivers near-hydro efficiency with air-cooled simplicity, robust build quality, and standard voltage compatibility. Whether you are expanding an existing SHA-256 fleet, upgrading legacy hardware, or establishing a new enterprise-grade mining operation, the A3 Air stands as a trusted workhorse for operators who demand reliable performance, operational reliability, and optimized total cost of ownership in an air-cooled package.