9.45 J/TH efficiency
Best-in-class at launch, which directly extends the machine's profitable life as difficulty climbs.
Bitdeer
Bitdeer SealMiner A4 Ultra Hydro 886 TH/s SHA-256 Miner
Bitdeer's flagship SEAL04 hydro miner: 886 TH/s at 9.45 J/TH, launched as the most efficient publicly announced hydro unit of its cycle.
- Hashrate
- 886 TH/s
- Power
- 8373 W
- Efficiency
- 9.45 J/TH
- Algorithm
- SHA-256
- Cooling
- hydro
- Released
- April 2026
Need 10, 50 or 100+ units? Request volume pricing.
What Is the Bitdeer SealMiner A4 Ultra Hydro?
The Bitdeer SealMiner A4 Ultra Hydro is a hydro-cooled Bitcoin miner rated at 886 TH/s and roughly 8,373 W, an efficiency of 9.45 J/TH. It uses Bitdeer's in-house SEAL04 chip and launched on 7 April 2026 as the flagship of the A4 series.
Bitdeer designs its own SEAL-series silicon rather than reselling third-party chips, and the A4 Ultra is the clearest expression of that: at 9.45 J/TH it edges out the best hydro Antminers on paper while delivering 886 TH/s from a single liquid-cooled unit.
For operators, the practical significance of a sub-9.5 J/TH machine is the breakeven power price. Every tenth of a joule per terahash shifts how long the fleet stays profitable through a difficulty rise or a price drawdown, which is why efficiency leaders command a premium per terahash.
Bitdeer SealMiner A4 Ultra Hydro Specifications
| Manufacturer | Bitdeer |
|---|---|
| Model | SealMiner A4 Ultra Hydro |
| Algorithm | SHA-256 |
| Hashrate | 886 TH/s |
| Power consumption | 8373 W |
| Efficiency | 9.45 J/TH |
| Cooling | Hydro (liquid) cooling |
| Form factor | Hydro-cooled miner |
| Chip / platform | Bitdeer SEAL04 |
| Mineable coins | BTC, BCH, BSV |
| Input voltage | Not published — confirm with sales |
| Network interface | Ethernet (RJ45) |
| Dimensions | Not published — confirm with sales |
| Weight | Not published — confirm with sales |
| Noise level | Not published — confirm with sales |
| Release date | April 2026 |
What Can the SealMiner A4 Ultra Hydro Mine?
The A4 Ultra Hydro is a SHA-256 miner: Bitcoin, Bitcoin Cash and Bitcoin SV are all compatible, and virtually all deployments run BTC.
- BTC
- BCH
- BSV
SealMiner A4 Ultra Hydro Power Consumption & Electricity Cost
The Bitdeer SealMiner A4 Ultra Hydro is rated at approximately 8373 W at the wall. Electricity is usually the largest recurring cost of running it, so estimate the draw at your own rate before committing to a deployment.
- Cost per hour
- $0.59
- Cost per day
- $14.07
- Cost per month (30 days)
- $422.00
Based on a rated draw of 8373 W at 100% uptime: power in kW × 24 × your rate. Real consumption varies with firmware, ambient conditions and uptime.
SealMiner A4 Ultra Hydro Hydro Cooling Requirements
The Bitdeer SealMiner A4 Ultra Hydro is a liquid-cooled unit. It has no onboard fans for the hashboards: heat is carried away by coolant circulating through a cold plate and must be rejected by external infrastructure — typically a dry cooler, cooling tower or plate heat exchanger sized for the site's total heat load.
A hydro deployment needs a closed loop with pumps, manifolds, filtration, quick-disconnect couplings and coolant treatment. Plan for water quality control and leak detection, and match manifold sizing to the number of units per row so flow rate stays inside the manufacturer's window.
The payoff is density and acoustics. Hydro units run far quieter than air-cooled miners, tolerate higher ambient temperatures, and let operators pack substantially more hashrate into the same floor area. Heat recovery is also practical, because the rejected heat leaves the machine as warm water rather than hot air.
Bitdeer SealMiner A4 Ultra Hydro Mining Profitability Calculator
Estimate the daily and monthly profitability of the Bitdeer SealMiner A4 Ultra Hydro based on its hashrate, power consumption, current Bitcoin price, Bitcoin network difficulty, and your electricity cost.
- Hashrate
- 886 TH/s
- Power draw
- 8373 W
Live profitability data temporarily unavailable.
Live Bitcoin price and network data could not be retrieved.
Estimated profitability for the Bitdeer SealMiner A4 Ultra Hydro. Mining profitability is an estimate and can change based on cryptocurrency price, network difficulty, transaction fees, pool fees, miner uptime, hardware performance, and electricity costs. Actual results may vary.
Why Consider the Bitdeer SealMiner A4 Ultra Hydro?
In-house SEAL04 silicon
Bitdeer controls its own chip roadmap, giving buyers a genuine alternative to Bitmain supply.
886 TH/s per loop connection
High output per set of couplings reduces plumbing, cabling and network port count per petahash.
Who Is the SealMiner A4 Ultra Hydro Best For?
- Efficiency-first industrial operators
- Farms diversifying away from single-vendor supply
- Sites with higher electricity costs
- New hydro build-outs in 2026
Bitdeer SealMiner A4 Ultra Hydro vs Comparable Miners
How the Bitdeer SealMiner A4 Ultra Hydro compares with the closest alternatives MinersDeals supplies on hashrate, power draw, efficiency and cooling.
| Model | Hashrate | Algorithm | Power | Efficiency | Cooling | Release |
|---|---|---|---|---|---|---|
| Bitdeer SealMiner A4 Ultra Hydro | 886 TH/s | SHA-256 | 8373 W | 9.45 J/TH | Hydro (liquid) cooling | April 2026 |
| Bitdeer SealMiner A4 Pro Hydro | 680 TH/s | SHA-256 | 7412 W | 10.9 J/TH | Hydro (liquid) cooling | April 2026 |
| Bitmain Antminer S23 Hyd 3U | 1,160 TH/s (1.16 PH/s) | SHA-256 | 11020 W | 9.5 J/TH | Hydro (liquid) cooling | May 2025 |
| Bitdeer SealMiner A3 Pro Hydro | 660 TH/s | SHA-256 | 8250 W | 12.5 J/TH | Hydro (liquid) cooling | — |
Efficiency (joules per unit of hashrate) determines how long a machine stays profitable as network difficulty rises, while total power draw determines what electrical and cooling infrastructure you need per unit. A more efficient miner is not automatically the better purchase — price per terahash, availability and the cost of the cooling infrastructure it demands all feed into the decision.
If you are weighing two of these models against each other, send us your electricity rate, target quantity and site cooling type and we will model the comparison against real availability and pricing.
Bitdeer SealMiner A4 Ultra Hydro Price
Pricing for the Bitdeer SealMiner A4 Ultra Hydro can vary depending on quantity, availability, market conditions and fulfillment requirements. MinersDeals provides individual and volume quotes for qualified buyers, so we publish current pricing on request rather than as a fixed list price.
Buying multiple units? Ask about volume pricing.
Buy Bitdeer SealMiner A4 Ultra Hydro
Looking to purchase the Bitdeer SealMiner A4 Ultra Hydro? MinersDeals helps individual buyers, mining operators and enterprise customers source specialized hardware. Submit your requirements to receive current availability and pricing.
Wholesale & Bulk SealMiner A4 Ultra Hydro Orders
Planning a larger deployment? Request pricing for 10, 50, 100 or more units. MinersDeals supports hardware procurement for mining farms, hosting providers and infrastructure operators, including staged delivery across multiple sites.
Frequently Asked Questions
How efficient is the SealMiner A4 Ultra Hydro?
About 9.45 J/TH — 886 TH/s at roughly 8,373 W.
What chip does it use?
Bitdeer's own SEAL04 ASIC.
When was it released?
7 April 2026, as the flagship of the SealMiner A4 series.
What are its dimensions, weight and voltage?
Bitdeer had not published those figures at the time of writing. Request the current specification sheet from sales rather than relying on third-party estimates.
How does it compare to the Antminer S23 Hyd 3U?
The S23 Hyd 3U is faster (1,160 TH/s) at 9.5 J/TH; the A4 Ultra is slightly more efficient at 9.45 J/TH with a lower per-unit power draw of about 8.4 kW.
Explore Related Categories
Related Mining Hardware
Get SealMiner A4 Ultra Hydro Pricing from MinersDeals
Tell us the quantity, destination and deployment timeline, and our team will come back with current availability and a quotation.