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
CatalogueSHA-256$35.71/day SHA-256$28.27/day SHA-256$27.44/day
SHA-256Hydro cooledReleased May 2026#1 by 24h profit
Bitdeer
Sealminer A4 Ultra Hydro
The heaviest hitter in the catalogue — 886 Th/s on a single hydro sled at 9.45 W/Th.
Hashrate
886.00 Th/s
Power draw
8.37 kW
Efficiency
9.45 W/Th
Profit / 24h
$36.79
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
Bitdeer built the A4 Ultra around its SEAL04 die, and it shows: nothing else in this catalogue pairs near-nine-watt efficiency with an 886 Th/s nameplate. It is a liquid-only machine, so it wants a plate exchanger and a dry cooler behind it, not a shed full of fans. Farms running it at 45 °C inlet report the full nameplate without throttling.
- SEAL04 3 nm-class hashboards, three per chassis
- Direct-to-chip liquid loop, 45 °C inlet tolerance
- Firmware tuning between 620 Th/s eco and 886 Th/s turbo
Full specification
- Manufacturer
- Bitdeer
- Model
- Sealminer A4 Ultra Hydro
- Release
- May 2026
- Algorithm
- SHA-256
- Cooling
- Hydro — direct liquid loop
- Nameplate hashrate
- 886.00 Th/s
- Power at the wall
- 8373 W
- Efficiency
- 9.45 W/Th
- Benchmark power price
- $0.18/kWh
- Electricity cost / 24h at benchmark
- $36.17
- Gross revenue / 24h
- $36.79
- Profit / 24h
- $36.79
- Data source
- August 2026 dataset
Run the numbers
Break-even power price: $0.183/kWh
Gross / day
$36.05
Power / day
−$35.45
Net / day
$0.61
- Net per month
- $18.45
- Net per year
- $221.29
- Margin on revenue
- 1.7%
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$36.79
- PPCSHA-256$30.15
- BTCSHA-256$30.02
Top coins — profit
- QUAISHA-256$36.79
- PPCSHA-256$30.15
- BTCSHA-256$30.02
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
Bitdeer · May 2026
Sealminer A4 Pro Hydro
- Hashrate
- 680.00 Th/s
- Power
- 7.41 kW
- Efficiency
- 10.90 W/Th
- Benchmark
- $0.16/kWh
Same A4 platform, softer power envelope. 680 Th/s at 7.4 kW suits retrofitted rooms.
Top payouts / 24h
- QUAI$28.27
- PPC$23.71
- BTC$23.04
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