Bitmain Antminer S21j XP Hyd (495Th/s)

The Bitmain Antminer S21j XP Hyd (495Th) is a premium hydro-cooled ASIC miner engineered exclusively for the SHA-256 algorithm, delivering exceptional processing power for Bitcoin (BTC) mining. Released in March 2026, this enterprise-grade hydro-cooled solution achieves an impressive hash rate of 495 Th/s while drawing 5940W of power, resulting in a solid energy efficiency of 12 J/Th. The S21j XP Hyd offers a compelling balance of raw computational output and operational economy, positioning itself as the ideal choice for professional mining facilities seeking high-performance SHA-256 mining with the enhanced thermal management, whisper-quiet operation, and sustainable heat repurposing capabilities of integrated liquid cooling.

At the heart of the S21j XP Hyd lies its advanced hydro-cooling system, which delivers superior thermal dissipation through a closed-loop liquid-cooling architecture. This sophisticated cooling solution ensures optimal operating temperatures even under sustained maximum load, dramatically reducing hardware degradation and extending operational lifespan far beyond traditional air-cooled systems. The system operates at an astonishingly quiet 50dB—unprecedented for a machine delivering nearly 500 terahash of computational power—making it ideal for facilities with strict noise regulations, residential areas, or urban data centers where acoustic pollution is a primary concern. Furthermore, the waste heat can be captured and repurposed for industrial heating, greenhouse agriculture, or district heating systems, transforming operational expenses into sustainable energy assets.

Engineered with Bitmain's legendary industrial precision and durability, the S21j XP Hyd features a compact, space-optimized chassis, measuring 410 x 170 x 209mm—a footprint designed for efficient integration into standard rack configurations. This streamlined design enables exceptional hash rate density, 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 unit requires high-voltage three-phase power infrastructure, reflecting its design for professional data centers and industrial mining facilities. Connectivity is facilitated through a robust Ethernet interface, guaranteeing low-latency communication and effortless integration with all major mining management platforms. Built to thrive in demanding environments, the S21j XP Hyd maintains flawless performance across a wide temperature range of 5 to 45°C and supports relative humidity levels between 5% and 95%.

By investing in the Bitmain Antminer S21j XP Hyd (495Th), you are securing a premium, future-proof mining asset that delivers exceptional petahash performance with superior hydro-cooled efficiency, whisper-quiet operation, and enterprise-grade reliability. Whether you are scaling your industrial SHA-256 fleet, modernizing your data center, or establishing a high-performance operation with stringent noise constraints, the S21j XP Hyd stands as the definitive choice for operators who demand uncompromising performance, exceptional thermal management, and sustainable innovation.