The post Sealminer A4 Series Debuts as Bitdeer Hits New Bitcoin Mining Efficiency Record – Mining Bitcoin News appeared on BitcoinEthereumNews.com.

Key Takeaways: Bitdeer launched the Sealminer A4 Ultra Hydro on April 7, 2026, hitting 9.45 J/TH efficiency, among the best figures in the industry. The A4 series, powered by Bitdeer’s SEAL04 chips, improves on the A3 series’ 12.5 J/TH, cutting power costs for miners facing tight post-halving margins. BTDR shares gained approximately 2.8% on launch day, with no shipment dates or pricing disclosed yet. Sealminer A4 Ultra Hydro Delivers 886 TH/s at 9.45 J/TH for Bitcoin Miners The Singapore-based company released the A4 lineup through its Sealminer brand, the in-house ASIC division that Bitdeer uses to develop and produce its own mining hardware. The series runs on Bitdeer’s latest SEAL04 chips, built on advanced process nodes, and represents the company’s clearest step yet toward competing directly with established hardware makers like Bitmain and MicroBT. Three models make up the A4 series, each targeting different deployment conditions. The A4 Ultra Hydro, the flagship hydro-cooled unit, delivers 886 terahash per second (TH/s) at 8,372.7 watts with a rated efficiency of 9.45 J/TH. The A4 Pro Hydro reaches 680 TH/s at 7,412 watts at 10.9 J/TH. The A4 Pro Air, the air-cooled option, produces 336 TH/s at 3,662.4 watts, also rated at 10.9 J/TH. Image source: Bitdeer. Bitdeer notes that power efficiency carries a tolerance of plus or minus 5%, and hashrate and power consumption carry a tolerance of plus or minus 10%. The A4 Ultra Hydro’s 9.45 J/TH rating marks a notable improvement over Bitdeer’s previous generation. The Sealminer A3 series, launched in September 2025, achieved between 12.5 and 14 J/TH. Earlier A2 Pro units ran at 14.9 J/TH. Each generation has moved closer to the sub-10 J/TH threshold that Bitdeer had been targeting at the machine level. Lower efficiency figures directly reduce electricity costs per bitcoin mined. That matters to operators…

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Filed under: News - @ April 7, 2026 6:21 pm