Key Takeaways:
Bitdeer launched the Sealminer A4 Extremely Hydro on April 7, 2026, hitting 9.45 J/TH effectivity, among the many finest figures within the business. The A4 collection, powered by Bitdeer’s SEAL04 chips, improves on the A3 collection’ 12.5 J/TH, chopping energy prices for miners dealing with tight post-halving margins. BTDR shares gained roughly 2.8% on launch day, with no cargo dates or pricing disclosed but.
Sealminer A4 Extremely Hydro Delivers 886 TH/s at 9.45 J/TH for Bitcoin Miners
The Singapore-based firm launched the A4 lineup by means of its Sealminer model, the in-house ASIC division that Bitdeer makes use of to develop and produce its personal mining {hardware}. The collection runs on Bitdeer’s newest SEAL04 chips, constructed on superior course of nodes, and represents the corporate’s clearest step but towards competing straight with established {hardware} makers like Bitmain and MicroBT.
Three fashions make up the A4 collection, every concentrating on completely different deployment situations. The A4 Extremely Hydro, the flagship hydro-cooled unit, delivers 886 terahash per second (TH/s) at 8,372.7 watts with a rated effectivity of 9.45 J/TH. The A4 Professional Hydro reaches 680 TH/s at 7,412 watts at 10.9 J/TH. The A4 Professional Air, the air-cooled choice, produces 336 TH/s at 3,662.4 watts, additionally rated at 10.9 J/TH.
Bitdeer notes that energy effectivity carries a tolerance of plus or minus 5%, and hashrate and energy consumption carry a tolerance of plus or minus 10%. The A4 Extremely Hydro’s 9.45 J/TH ranking marks a notable enchancment over Bitdeer’s earlier technology. The Sealminer A3 collection, launched in September 2025, achieved between 12.5 and 14 J/TH.
Earlier A2 Professional models ran at 14.9 J/TH. Every technology has moved nearer to the sub-10 J/TH threshold that Bitdeer had been concentrating on on the machine stage. Decrease effectivity figures straight scale back electrical energy prices per bitcoin mined. That issues to operators proper now. Bitcoin hashprice has remained below strain for the reason that April 2024 halving reduce block rewards from 6.25 BTC to three.125 BTC, compressing margins for miners operating older, much less environment friendly {hardware}.
The hydro-cooled fashions are designed for high-density knowledge middle deployments the place warmth administration is a constraint. Each hydro models supply a low-noise profile alongside optimized thermal efficiency, which Bitdeer says helps machine stability and uptime at scale. The A4 Professional Air gives flexibility for websites that can’t help liquid cooling infrastructure.
Bitdeer operates as a vertically built-in supplier, managing chip design, machine manufacturing, and knowledge middle operations throughout america, Norway, Bhutan, and Ethiopia. The A4 rigs are anticipated to help each exterior {hardware} gross sales and Bitdeer’s inside self-mining fleet, which the corporate has been increasing by means of successive Sealminer deployments.
BTDR shares dipped roughly 1% on the announcement day, not too per how the inventory has responded to prior {hardware} launch occasions. Bitdeer didn’t disclose pricing, pre-order particulars, or cargo timelines within the announcement. Bitdeer’s announcement web page had not but been up to date with A4 particulars on the time of reporting.
The A4 launch extends a chip growth roadmap that Bitdeer has described as concentrating on roughly 5 J/TH on the chip stage in future generations. The corporate has beforehand proven sub-10 J/TH leads to chip-level benchmarks below optimized situations, with the A4 bringing that efficiency into commercially delivered {hardware}.
Bitdeer’s vertical integration technique means it controls prices and specs throughout the complete provide chain moderately than sourcing chips from third-party foundries or buying machines from opponents. That mannequin offers the corporate extra management over {hardware} output and timing, although it additionally concentrates R&D threat internally.
No manufacturing quantity targets or supply schedules have been offered alongside the announcement.
