Bitdeer · Sep 2025
Sealminer A3 Pro Hydro
- Hashrate
- 660.00 Th/s
- Power
- 8.25 kW
- Efficiency
- 12.50 W/Th
- Benchmark
- $0.14/kWh
A proven 2025 workhorse at 660 Th/s. Widely deployed, so spares are everywhere.
Top payouts / 24h
- QUAI$27.44
- PPC$23.07
- BTC$22.36
CatalogueSHA-256$27.44/day SHA-256$24.12/day SHA-256$35.71/day
SHA-256Hydro cooledReleased May 2026#4 by 24h profit
Bitdeer
Sealminer A4 Pro Hydro
Same A4 platform, softer power envelope. 680 Th/s at 7.4 kW suits retrofitted rooms.
Hashrate
680.00 Th/s
Power draw
7.41 kW
Efficiency
10.90 W/Th
Profit / 24h
$28.27
Priced per unit on request — pricing moves with batch, condition and freight destination.
Technical faceplate drawing generated from this unit's own specs — board count, port layout and vent density track the real configuration. Photography available on request.
The short version
The A4 Pro is the sensible sibling of the Ultra: identical loop fittings and control board, 961 fewer watts, and a power envelope that fits sites already wired for the S21 generation. If your transformer headroom is the binding constraint rather than floor space, this is usually the better buy.
- Drop-in replacement for 7.5 kW hydro slots
- 10.90 W/Th across the full curve
- Shares spares and fittings with the A4 Ultra
Full specification
- Manufacturer
- Bitdeer
- Model
- Sealminer A4 Pro Hydro
- Release
- May 2026
- Algorithm
- SHA-256
- Cooling
- Hydro — direct liquid loop
- Nameplate hashrate
- 680.00 Th/s
- Power at the wall
- 7412 W
- Efficiency
- 10.90 W/Th
- Benchmark power price
- $0.16/kWh
- Electricity cost / 24h at benchmark
- $28.46
- Gross revenue / 24h
- $28.27
- Profit / 24h
- $28.27
- Data source
- August 2026 dataset
Run the numbers
Break-even power price: $0.159/kWh
Gross / day
$27.70
Power / day
−$27.89
Net / day
$-0.19
- Net per month
- $-5.73
- Net per year
- $-68.71
- Margin on revenue
- -0.7%
Gross revenue is the catalogue figure for this unit. Net subtracts electricity at your rate only — pool fees, hosting and hardware amortisation are not included, and payouts move with network difficulty.
Where the money comes from
Best-paying SHA-256 targets over the last 24 hours.
Top coins — revenue
- QUAISHA-256$28.27
- PPCSHA-256$23.71
- BTCSHA-256$23.04
Top coins — profit
- QUAISHA-256$28.27
- PPCSHA-256$23.71
- BTCSHA-256$23.04
Switching targets is a firmware and pool-config change, not a hardware change. Most operators point at the top line and let a profit switcher handle the rest.
What a quote includes
- Unit price at your order quantity
- Lead time and current batch availability
- Freight to your site, duties flagged separately
- Warranty terms — new, refurbished or as-is
- Payback estimate against your real power price
Comparable SHA-256 units
Bitmain · Jan 2026
Antminer S23 Hyd
- Hashrate
- 580.00 Th/s
- Power
- 5.51 kW
- Efficiency
- 9.50 W/Th
- Benchmark
- $0.18/kWh
Bitmain’s efficiency champion: 9.50 W/Th from a 5.5 kW box.
Top payouts / 24h
- QUAI$24.12
- PPC$20.47
- BTC$19.65
Bitmain · Nov 2024
Antminer S21E XP Hyd 3U
- Hashrate
- 860.00 Th/s
- Power
- 11.18 kW
- Efficiency
- 13.00 W/Th
- Benchmark
- $0.13/kWh
Rack-native 3U enterprise sled. 860 Th/s per slot, built for container density.
Top payouts / 24h
- QUAI$35.71
- PPC$29.35
- BTC$29.14