Bitdeer SealMiner A4 Ultra Hydro 886 TH/s SHA-256 Bitcoin Miner

886 TH/s of SHA-256 at 8,372.7W and 9.45 J/TH. Bitdeer rates the unit with plus or minus 10 percent on hashrate and power and plus or minus 5 percent on efficiency, so real-world output runs roughly 797 to 975 TH/s, with typical operation around 870 to 900 TH/s.

SEAL04 is Bitdeer's fourth-generation, self-developed SHA-256 mining chip, built on advanced process nodes. It follows SEAL01 in the A1 series, SEAL02 in the A2 family and SEAL03 in the A3 family, and powers the A4 range from 10.9 J/TH down to 9.45 J/TH. Bitdeer designs the chip and builds the machine itself.

At 9.45 J/TH it is among the most efficient Bitcoin miners in production, just ahead of the Antminer S23 Hydro at 9.5 J/TH and well ahead of roughly 12 J/TH hydro units and 18 to 19 J/TH air units. At fleet scale that gap compounds into lower power draw for the same hashrate, which is the main reason operators choose it.

A4 Pro Air at 336 TH/s and 10.9 J/TH (air cooled), A4 Pro Hydro at 680 TH/s and 10.9 J/TH, and A4 Ultra Hydro at 886 TH/s and 9.45 J/TH. All three share the SEAL04 chip platform. The Ultra Hydro is the top efficiency and hashrate model; the Pro models offer a lower entry into the same platform.

Liquid-to-chip hydro cooling. It connects to a facility hydro loop, the coolant distribution unit, dry cooler or chiller, heat exchanger and pumps, the same setup as Bitdeer's other hydro miners. That cooling is what enables its density and near-silent operation, and if you already run Bitdeer hydro racks it ties in directly.

380 to 480V three-phase AC with up to 97 percent PSU efficiency, drawing 8,372.7W continuous. That is industrial three-phase power, so it is built for professional facilities rather than residential or light-commercial single-phase supply. Expect roughly 12 to 15 amps per phase at 480V.

Yes. It is a 2U unit at 482 x 665 x 86 mm for standard 19-inch racks, sharing the chassis of Bitdeer's A2 and A3 hydro miners. A 42U rack holds about 21 units, roughly 18.6 PH/s per rack, so operators with existing Bitdeer hydro rows can add capacity fast.

Around 50 dB. Hydro cooling removes most of the fan noise of air-cooled SHA-256 hardware, which typically runs near 75 dB. Staff can work close to deployed units without hearing protection, which suits shared and multi-tenant data centres.

The A4 Ultra Hydro runs 886 TH/s at 9.45 J/TH; the Bitmain S23 Hydro runs 580 TH/s at about 9.5 J/TH. Efficiency per terahash is essentially level, and the A4 delivers about 53 percent more hashrate per unit, so it packs more work into each rack slot. Bitdeer also brings vertical integration and a NASDAQ-listed name behind the hardware.

It mines Bitcoin (BTC), Bitcoin Cash (BCH) and Bitcoin SV (BSV) on the SHA-256 algorithm. Bitdeer rates the hydro models for a 20 to 55 degrees Celsius ambient range and backs them with a 365-day warranty from shipment. MillionMiner ships worldwide DDP with customs and duties handled, or can host the unit in our US facilities.