Sealminer A4 Series Debuts as Bitdeer Hits New Bitcoin Mining Efficiency Record
By Jamie Redman
Bitdeer Technologies Group launched the Sealminer A4 series of Bitcoin mining rigs on Tuesday, with the flagship Sealminer A4 Ultra Hydro achieving 9.45 J/TH efficiency, among the highest from major manufacturers. The model debuted on April 7, 2026, setting a new record for power-efficient mining hardware. This advancement enhances mining operations' cost-effectiveness amid rising energy costs.
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