Bitdeer SealMiner A4: specs, electricity costs, and what it earns
Bitdeer launched the SealMiner A4 series on April 7, 2026 — three SHA-256 machines built on their SEAL04 chips. The flagship A4 Ultra Hydro hits 9.45 J/TH, a solid jump from the A3 generation's 12.5–14 J/TH. Pricing and shipping aren't confirmed yet, so some of what follows is an educated guess — labeled as such.
SealMiner A4 Specs
| Model | Hashrate | Power | Efficiency | Cooling |
|---|---|---|---|---|
| A4 Ultra Hydro | 886 TH/s | 8,373 W | 9.45 J/TH | Hydro |
| A4 Pro Hydro | 680 TH/s | 7,412 W | 10.9 J/TH | Hydro |
| A4 Pro Air | 336 TH/s | 3,662 W | 10.9 J/TH | Air |
±10% tolerance on hashrate and power, ±5% on efficiency. The Pro Air is the entry-level option — no liquid cooling infrastructure needed.
SealMiner A4 Earnings
At current payrates (SHA256ASICBOOST, April 8, 2026), the A4 Ultra Hydro earns approximately $24.90/day gross. Check the NiceHash profitability calculator for live numbers — they move with hashrate demand on the spot marketplace.
NiceHash typically pays above standard FPPS pool rates because buyers compete for your hashrate in real time. On a machine at this level, even a 2–3% premium adds $17–22/month per unit.
SealMiner A4 electricity cost and estimated ROI
Estimated pricing: Ultra Hydro ~$10k–$12k, Pro Hydro ~$4k–$8k, Pro Air ~$2k. These are guesses — treat them as such.
A4 Ultra Hydro — est. $10,000–$12,000
| Electricity | Power cost/day | Net/day | Net/month | Est. ROI |
|---|---|---|---|---|
| $0.04 / kWh | $8.04 | $20.66 | ~$620 | 16–19 months |
| $0.06 / kWh | $12.06 | $16.64 | ~$499 | 20–24 months |
| $0.08 / kWh | $16.07 | $12.63 | ~$379 | 26–32 months |
| $0.10 / kWh | $20.09 | $8.61 | ~$258 | 39–47 months |
A4 Pro Hydro — est. $4,000–$8,000
| Electricity | Power cost/day | Net/day | Net/month | Est. ROI |
|---|---|---|---|---|
| $0.04 / kWh | $7.12 | $14.92 | ~$448 | 9–18 months |
| $0.06 / kWh | $10.67 | $11.37 | ~$341 | 12–23 months |
| $0.08 / kWh | $14.23 | $7.81 | ~$234 | 17–34 months |
| $0.10 / kWh | $17.79 | $4.25 | ~$128 | 31–63 months |
A4 Pro Air — est. ~$2,000
| Electricity | Power cost/day | Net/day | Net/month | Est. ROI |
|---|---|---|---|---|
| $0.04 / kWh | $3.52 | $7.36 | ~$221 | ~9 months |
| $0.06 / kWh | $5.27 | $5.61 | ~$168 | ~12 months |
| $0.08 / kWh | $7.03 | $3.85 | ~$116 | ~17 months |
| $0.10 / kWh | $8.79 | $2.09 | ~$63 | ~32 months |
All ROI figures are speculative. Payrate data from NiceHash as of April 8, 2026.
A word on efficiency and obsolescence
The Pro Hydro and Pro Air run at 10.9 J/TH vs the Ultra's 9.45 J/TH. Less efficient machines hit their break-even electricity price faster as difficulty rises and get pushed offline sooner. A long ROI on a less efficient machine is riskier than the same number on a more efficient one — it may simply not have the runway to complete it.
The Pro Air at ~$2,000 is the exception — low enough entry cost that payback happens fast enough to matter less. At $0.06/kWh you're looking at roughly 12 months.
Once Bitdeer confirms pricing, run your numbers here: NiceHash profitability calculator.
Try mining on NiceHash
If you're running a SealMiner A4 or any other SHA-256 machine, connecting to NiceHash takes a few minutes. Point your miner to our stratum address, and the platform handles the rest — matching your hashrate to the highest bidder automatically, paying out in BTC every four hours.
No new workflows, no manual trading. Just higher payrates.