Terahash on a Diet: Bitdeer’s New A3 Bitcoin Miner Cuts Watts for the Same Work

Bitdeer (Nasdaq: BTDR) unveiled its Sealminer A3 line on Tuesday, pitching more terahash per watt for miners who count joules like pennies.

###Watt Watchers: Bitdeer’s A3 Line Aims Straight at Opex

According to the announcement shared with Bitcoin.com News, the newest bitcoin mining rigs arrive in four trims: two air-cooled units (A3 Air, A3 Pro Air) and two hydro-cooled models (A3 Hydro, A3 Pro Hydro). The headliner is the A3 Pro Hydro, rated at 660 terahash per second (TH/s) with power efficiency of 12.5 joules per terahash (J/TH), built for facilities that plumb heat away rather than blast it into the room.

For air, the A3 Pro Air delivers 290 TH/s with the 12.5 J/TH rating, while the A3 Air is listed at 260 TH/s and 14 J/TH. For hydro without the “Pro” badge, the A3 Hydro is spec’d at 500 TH/s and 13.5 J/TH. Bitdeer posts power ranges: A3 Pro Hydro at 7,875–8,625 watts; A3 Pro Air at 3,250–4,000; A3 Hydro at 6,210–7,290; A3 Air at 3,360–3,920.

New Sealminers from Bitdeer. Beyond speed, Bitdeer flags a Sealminer staple: lower-noise operation and reduced power per unit of hashrate. Translation: fewer kilowatt-hours for the same work, with acoustics friendlier to staff and neighbors alike.

The company frames the series as a cost-cutter for operators watching opex, saying efficiency gains and higher hashrates suit large-scale mines that measure progress by the rack, not the rig. The A3 family leans on Bitdeer’s in-house Seal chips fabricated on advanced process nodes.

The firm said the launch tracks Bitdeer’s broader push into vertically integrated computing, spanning equipment design, procurement, logistics, and data center operations across the United States, Norway, and Bhutan. The company also noted it courts artificial intelligence (AI) clients with cloud capacity, a side hustle powered by the same obsessions: power, cooling, and silicon.

The company’s new miner lands right in the middle of a dogfight between hardware giants. Block’s Proto miner is flexing, Bitmain is throwing around its latest beasts, and the usual suspects—Canaan, Auradine, and Microbt—are parading their own contenders.

Bitcoin rigs these days aren’t just hashing; they’re practically screaming through terahash and even tipping into petahash territory, all while trimming operating costs with tighter efficiency.