Joerg Hiller
Apr 07, 2026 12:49
Bitdeer launches SEALMINER A4 series mining rigs featuring 9.45 J/TH efficiency and up to 886 TH/s hashrate, fulfilling its chip development roadmap.
Bitdeer Technologies Group (NASDAQ: BTDR) has launched its SEALMINER A4 series mining rigs, hitting a power efficiency benchmark of 9.45 joules per terahash that positions the Singapore-based company among the most efficient ASIC manufacturers in the industry. The announcement marks the completion of Bitdeer’s previously outlined chip development roadmap.
The new lineup runs on Bitdeer’s proprietary SEAL04 chips and comes in three configurations targeting different deployment scenarios. The flagship A4 Ultra Hydro delivers 886 TH/s at 9.45 J/TH while consuming 8,372.7 watts. For operations preferring hydro-cooling at a lower price point, the A4 Pro Hydro offers 680 TH/s at 10.9 J/TH efficiency.
Mining operations without liquid cooling infrastructure can opt for the A4 Pro Air, which produces 336 TH/s at the same 10.9 J/TH efficiency while drawing 3,662.4 watts. Bitdeer notes all specifications carry a ±5% variance on efficiency and ±10% on hashrate and power consumption.
Why Efficiency Matters Right Now
With Bitcoin trading around $69,163 as of April 7, miners are operating in a post-halving environment where every joule counts. The 2024 halving cut block rewards to 3.125 BTC, making operational efficiency the difference between profitability and running at a loss for many operations.
The 9.45 J/TH figure on the A4 Ultra Hydro represents a meaningful improvement over previous-generation machines. For context, older S19-era machines typically operate above 30 J/TH—meaning the A4 series could theoretically produce the same hashrate at roughly one-third the electricity cost.
Bitdeer’s Vertical Integration Play
Unlike pure-play miners who buy equipment from third parties, Bitdeer has been building out its own chip design and manufacturing capabilities. The company, which spun off from Bitmain in 2021 and went public via SPAC in April 2023, operates data centers across the United States, Norway, Bhutan, and Ethiopia.
This vertical integration strategy carries higher R&D costs but offers better margins if the hardware performs as advertised. Bitdeer reported significant Bitcoin production growth in January 2026 and completed a registered direct offering of 5.5 million shares in February, suggesting the company is well-capitalized to scale production.
The hydro-cooling models target large-scale operations where heat density becomes a limiting factor. Bitdeer claims the advanced cooling system maintains performance in high-density environments while keeping noise levels low—a consideration for facilities near populated areas.
Pricing and shipping timelines weren’t disclosed in the announcement. Miners evaluating the A4 series will want to factor in total cost of ownership, including any infrastructure upgrades needed for hydro-cooling deployments, against current and projected network difficulty.
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